*Any Good UT Stories? *有没有好看的ut书啊？

1. 1 U UT: I Joined the Bad Time Trio to Fight a Green-Tea Bitch?! UT：我上邪骨团打绿茶？！ Gui Chen归灬尘Anime Fanfiction127k WordsOngoing [Undertale] [UT] [Undertale] [Bad Sans Crew] The female lead has no romance. Side pairings include ErrorInk, MustardKetchup, NightmareKiller, and MurderHorror. The female lead comes from a derivative AU of the Blossoms Fade AU. She isn’t kind or saintly, and the backstory has been changed somewhat. The story is mainly about the female lead being selected by the System and joining the Bad Sans Crew. She half-heartedly helps deal with a suspicious little green tea who seems to have the crew’s skel 171Reads6.8Score—Shelves

   Reader note

   I don't know why, but I can only post these few books. If you want to read more, check out my bookshelf.

2. 2 穿 Transmigrated Into Horror 穿越成horror Gray Baiye灰百叶Two Male Leads418k WordsCompleted [System + sans + Undertale derivative] The story of an ordinary transmigrator. Pairing: murder × horror, no fixed roles 806Reads9.2Score104Shelves
3. 3 暮 Twilightale 暮光传说twilightale Dream of the Future未来之梦Anime Fanfiction265k WordsCompleted Keywords: Undertale, Undertale, AU, Sans An unconventional Chinese-made AU This story may have no beginning, and may never have an ending. What kind of spectacular tale will unfold on the stage of this multiverse? The blurb doesn't do it justice, so I recommend reading the story itself. This is an unconventional Chinese-made AU. I've left the fandom, and I'm only writing this book to fill in the gaps. I don't want to keep drawing, so I've switched to writing a novel instead. I'm an average writ 205Reads8.6Score—Shelves
4. 4 我 I Opened a Bone Daycare in the Real World, Shocking the Internet 我在现实开了骨头幼儿园震惊全网 Song of Dreams梦想之歌Modern Romance78k WordsCompleted [This story has CP pairings: Tomato and Wasabi, crnm, ie, and ckc. No male lead. If you don't like it, please don't flame me.][The beginning is an explanatory section for newcomers. If I start introducing test subjects, that means I'm telling you about my original Laboratory series. It's my own creation, so feel free to make derivative works, but don't go too far or ruin the characters.][The first part is an introduction and explanation; the national destiny plot comes later.][One day, the prota 44Reads—Score—Shelves
5. 5 关 About My Love for an Oil Octopus 关于我喜欢一只石油章鱼这事 Clouds, Rain, Stars, and River云雨星河Anime Fanfiction329k WordsCompleted [Complete and signed] [Just an embarrassing old work] Nightmare otome It’s already an embarrassing old work (looks away) 102Reads8.2Score—Shelves
6. 6 国 National Fate: Sans Tried to Slack Off, but Failed 国运之sans摆烂未遂 Zhuo Yi Lin濯沂霖Anime Fanfiction185k WordsOngoing Ultraman. Classic National Destiny setup. No transmigration, with AU characters. Parts not mentioned in the original may include my own headcanon, and characters from other works will make guest appearances. I'll write whenever inspiration strikes. Basically, I want to write something fun, and I'll try not to break your heart… probably. There'll definitely be some revelations about the past, too. All in all, I just want to serve up some real feast-for-the-soul action and have everyone kick ass. 167Reads7.1Score—Shelves
7. 7 成 Becoming Error 成为error Zhiye Kalas Hali Si治也卡拉斯哈里斯Anime Fanfiction310k WordsOngoing An Undertale AU fanfic, mostly based on my own headcanons, not canon. About a certain skeleton who decides to become a destroyer. Due to circumstances beyond my control, an official pairing was added later. It doesn't appear in the main story, only in the extras. But after signing the contract, I couldn't change the tags, ugh. Everything the protagonist does comes from his own heart. Whether good or evil, it's his own choice. No pairings in the main story. [The protagonist doesn't consider hims 2kReads8.7Score114Shelves
8. 8 国 National Fate: Sans Can Dominate Even While Frail 国运：sans即使病弱也能横推 TascrilAnime Fanfiction192k WordsOngoing Sans takes part in the National Destiny game. No transmigration plot, but there will be AUs. I’ll do my best to capture Sans’s personality and avoid making him OOC. Sans is the strongest fighter in another world. A fragile mage with infinite magic. No System, no CP, survival game. There will be viewing-room segments where secret identities are exposed. I started writing this because I wanted to write a power fantasy. I changed the cover. I drew it myself. I didn’t have time to change it before b 616Reads8.1Score100Shelves

   Reader note

   I highly recommend the first book 💕; the second book is subjective, some people might like it, some might not; the sixth and seventh books are also very good; I haven't read the thirteenth book, so I don't know how it is 🤔

9. 9 突 Suddenly, I Got My Own System 突然多了个自己的系统 cassureMystery278k WordsCompleted (No female lead + AU spin-off + original AU setting + plot-focused) In short, it's just my weird ideas... I'm only writing for fun... It may involve all sorts of elements, but the main focus is my, um... babies. I woke up one day... and things outside seemed to have changed. I don't know what changed, but it claims that I created it, that it belongs to me... that it's mine... Whatever... It's fine... Let's just leave it at that. 30Reads—Score—Shelves
10. 10 自 My Custom Sans Travels Through the Myriad Worlds 自设sans的诸天旅行 GenoAnime Fanfiction685k WordsCompleted [The Myriad Worlds + National Fate + Sans] About my original character, who has multiple personalities and wanders around the Myriad Worlds. (Note: Updates every Tuesday, Friday, Saturday, and Sunday.) Most of Sans’s characterization is based on canon, fanon, and my own ideas. (Any similarities are purely coincidental.) 215Reads7.2Score—Shelves
11. 11 传EN Undertale: A Bad Sans's Journey Through the Multiverse 传说之下：邪骨旅行多元宇宙 oirAnime Fanfiction236k WordsCompleted [Anthropomorphism + multiverse + time-and-space redemption + very little OOC] After escaping the octopus's control, Killer Sans decides to travel across the multiverse, making friends in different worlds and saving other timelines with fates like his own. Along the way, he meets the experienced Murder, the mysterious ulb, and even the eerie, terrifying Sanstrosity. - Killer Sans: That's right, I'm talking to you! Want to be my friend and help me save the universe from disaster? Then type 1! Murd 253Reads8.4Score—Shelves
12. 12 国 National Fate: I Transmigrated as Sans, with Zhongli as My Teammate 国运：穿越sans，队友钟离 Magician of the Rainbow Bridge七彩虹桥的魔术人Anime Fanfiction329k WordsOngoing [Undertale / UT Fan Work] [The national fortunes are not dominated by one country] I know the title's a bit of a mixed bag... But the story itself is even more complicated ( ) [The writing in the first few chapters isn't very polished, so they may not be the best read, but please stick with it for a few more chapters!] A veteran UT player with a complicated background transmigrates, only to find himself caught up in a game of national fortunes? Complete the game across ten worlds, and you can re 2.3kReads9.4Score179Shelves
13. 13 U UT: About My Family of Evil Bones UT：关于我家有邪骨团这件事 YOLOjingkAnime Fanfiction94k WordsCompleted This is my second book. It shares the same worldbuilding as the first, so I guess you could call it a little crossover. The beginning is pretty rough, but I promise the later plot will satisfy you. The author is a fan of many things, so there may be quite a lot of elements. Please bear with me. 9Reads—Score—Shelves
14. 14 传 Undertale: The Story of an ULB 传说之下：一只ulb的故事 Leader of the Way of Great Peace太平道道主Anime Fanfiction150k WordsCompleted Give him one molecule of oxygen and he'll dance until the world ends. He is the fearsome ulb. General of the Army Douglas MacArthur, speaking from far away on the surface, once said, “If God told me to defeat ulb, then God himself would have to join the battle with a real sword.” Asgore, king of the Underground, also said, “From the moment I appointed ulb as judge, I knew I would never see another slaughterer again.” Frisk, humanity's ambassador for peace, said, “After ulb's trial, I never commi 208Reads7.1Score—Shelves
15. 15 转 Reborn as Murder 转生murder Lazy Yu懒惰的宇Anime Fanfiction112k WordsCompleted After countless massacres, Murder unexpectedly gained countless memories about UT. He also happened to join a chat group connecting myriad worlds, and began his journey across them. 189Reads6.5Score—Shelves
16. 16 梦 After the Dream: Ream 梦想之后—ream ReamAnime Fanfiction388k WordsOngoing [Signed] After Dream *Dream transmigrated... I was just playing with a seed, and somehow transmigrated. True peace and all that. Faith, Nightmare, a System cheat. A Minecraft streamer’s comeback journey! “Why don’t you turn off your cheats if you’re so good?” “I use cheats because I can.” Without cheats, this loser Dreamer is only a bottom-tier fighter. Why is the plot progressing so slowly! This cheat makes it feel like an invincible-protagonist story! Stop padding things out and get the pl 67Reads6.5Score114Shelves
17. 17 传 Undertale: Sans in the Apocalypse 传说之下：末世中的Sans ClassicSci-Fi & Apocalypse721k WordsCompleted Told mainly from Sans's perspective. Zombie apocalypse. No overwhelming combat strength [probably]. A System is present. Not a mindless power fantasy, so readers will need to use their heads. Please check the warnings before reading. In the False Pacifist route, led by Frisk, the monsters emerge from the barrier and integrate into human society in almost the best way possible. “Monsters” become a special class of citizens in the country. But happiness is always fragile, and after this strange pl 269Reads8.7Score—Shelves
18. 18 禁 Exploring the Forbidden Zone: My Teammate Is Dupi 禁地探秘之我的队友是杜皮 The Five Elements of Heaven's Way天道五行Urban175k WordsCompleted (There aren't many scenes set in the forbidden lands; most of the story takes place in other worlds. Unfortunately, I can't change the title, so it'll have to stay this way.) [Potential heroine]+ [The Role-Playing System barely features]+ [Chat Group] Here, you'll see Xiao Ming steal someone else's account right in front of Oma Zi-O, Zero and Tartarus shake hands and make peace, becoming good friends, Dupi turn into a planet-destroying big shot, and Yugi Muto sweep through worlds with Exodia. Th 133Reads7.0Score—Shelves

    Reader note

    The second one is quite nice, but it's too short.

19. 19 武 Martial Souls: The Dust-Covered Assassin 武魂：布满尘埃的杀手 The Breeze Is So Sleepy清风好困Anime Fanfiction590k WordsOngoing A note before you read: this is a crossover fanfiction between Douluo and Undertale. Chen Yuyan, a model young man from the 21st century, was playing an Undertale spin-off at home. But after accidentally insulting Tang the God King, he was punished and unexpectedly wound up in the world of Douluo. At first, all he wanted was to see if he could get a divine position. But everything changed when he witnessed the family members he had lived with for years die at Tang Hao's hands in an act of reveng 337Reads—Score101Shelves
20. 20 传 From the Start in Undertale, I Create a Sans Chat Group 传说之下开局创建sans聊天群 Lazybones Sans懒骨头杉斯Anime Fanfiction177k WordsOngoing I reincarnated as... Sans. The genocide route?! Liu Feng looks at the human before him as a Gaster Blaster slowly materializes behind him. Today is such a beautiful day... Papyrus, would you like something... How about we team up against the humans? Do I have any other choice? Dust Sans takes Liu Feng’s hand. (I’m new to this, so please be kind!) 52Reads8.1Score102Shelves
21. 21 穿 I Transmigrated to Genshin Impact, and I’m a Skeleton? 穿越原神之我是个骨头？ Lazy Ghost Blows Out the Lamp懒鬼吹灯Anime Fanfiction155k WordsCompleted Lan Gu transmigrated into the world of Genshin Impact and became a god, but his brother was gone, so he set out to save him. P.S. The protagonist's abilities are roughly like Sans's. No System. A female lead may or may not appear. 80Reads7.3Score—Shelves
22. 22 传 Undertale: The Genocide Route 传说之下【屠杀线】 Kitty Hescu猫猫赫斯克Anime Fanfiction96k WordsCompleted Our battle takes place in the corridor; who wins and who loses is determined by the truth. The killer's heart has already fallen into endless darkness. This is Undertale's [Genocide Route]. 17Reads—Score—Shelves

    Reader note

    The fourth book is being updated a bit slowly, while the last one is being updated with two chapters per day. The others are pretty much the same.

23. 23 谁 Who Told Him to Make Games?! 谁让他做游戏的！ Would You Like a Rose?玫瑰你要吗Urban3.2M WordsCompleted Lu Li transmigrates to Blue Star and inherits a game company on the verge of bankruptcy. He plans to carve out a territory with his sheer skill, but the shameless System refuses to play fair! From the start, it assigns an outrageous hidden quest: [Players smash their keyboards: 0/1000] Faced with tempting hidden rewards, Lu Li smiles and pulls out cheap games to torment the three bros: Only If You’re a Man Can You Jump 100 Floors, Hammer Smash, and Dead Cells. That month, keyboard and mouse sale 14kReads8.7Score1.8kShelves
24. 24 k Killer Doesn't Want to Move killer不想动 Gray Baiye灰百叶Anime Fanfiction501k WordsCompleted [Undertale AU fanfiction + No romance + Dual protagonists + Dual personalities + No System] A crossover with my previous book, Transmigrated as Horror, set in the same world. Also known as I Became Killer's Other Personality. A soul from another world merges with a soul in pain. Sharing their memories allows them to trust each other. Along this long and painful road, will they find redemption, or fall into the abyss... “I long for peace, but fate always pushes me toward a different path.” “P 1.3kReads8.9Score128Shelves

    Reader note

    Go to my bookshelf, I recommend *Starry Tale*.

25. 25 g Ghost Wants a Peaceful Route ghost想要和平线 Unconventional Expectations非常规期待Anime Fanfiction517k WordsOngoing [Undertale fanwork] [Some original headcanons] [No pairing in the main story] The main plot follows Killer!Sans's official comic, and has currently reached the multiverse. Hi, I'm Ghost. I'm a ghost~ Right now, I have absolutely no idea what strange world I've fallen into. But that's okay! I can't remember anything anyway. I don't know whether forgetting is a good thing or a bad thing. I don't know. I sincerely hope it won't be long. So, Sans, go back to sleep for a little while. It'll be over s 632Reads8.4Score112Shelves
26. 26 你 Hello, My Name Is Ink! 你好，我叫ink！ Took Off, Wuhu!起飞了芜湖Anime Fanfiction261k WordsOngoing [Undertale AU spin-off + no System + no CP + heartless little villain + lots of original lore + chaotic neutral] Simply put, this is a travelogue about the protagonist after being reborn. He always puts himself first, roaming far and wide in pursuit of his ideals. At first, he works as a hired hand for the heroes; later, he becomes the fall guy for the villains. A certain little dreamer comments, “Although our differences in ideals forced us to part ways, he will always be my friend.” A certain 977Reads8.1Score134Shelves
27. 27 u UT: Deviation ut：偏差 Li Xiaomi黎晓蜜Anime Fanfiction102k WordsOngoing [Undertale derivative + heavily altered setting + OOC + Nightmare gets put through the wringer + no romance in the main story, I love platonic pairings!] If everything deviated from how it was supposed to be, if everything changed, I think I’d say that we are not redeemed, we are not forgiven, and we don’t need the judgment of bystanders, because we are simply ourselves. (This blurb is a mess, don’t mind it.) This story came from the author’s frustration with the original Dreamtale setting and 256Reads—Score—Shelves
28. 28 e The Wonderful Journey of Error error的奇妙旅程 Han Linyue寒临月Anime Fanfiction361k WordsOngoing [Undertale AU fanfic + My take on Error as the protagonist + Not hot-tempered or quick to anger + Error based mainly on canon, with my own additions + No Romance for Error in the main story + Unorthodox National Destiny + Watch-Along Reveals the Truth + Multiverse] The National Destiny game is just a starting point, and most of the on-screen comments are friendly. Because of an unknown program, Error arrives in Aftertale to take part in a National Destiny game. Although the creator’s will means 432Reads8.7Score101Shelves
29. 29 F Feather’s Half-Alive Feather的半死不活 Li Xiaomi黎晓蜜Anime Fanfiction135k WordsCompleted [Undertale spinoff + my own OCs + Evilbone group + writing whatever] First off, this book is purely for fun, and I can't promise regular updates. It's lighthearted, has no romance, though there may be platonic relationships. The story moves along pretty quickly. I'm not good at writing introductions, so please read the book. * This book has a mountain of headcanons. * Nightmare in this book will have fewer elements from the official canon (the canon is trash, so I'm not using it. I just like evi 132Reads—Score—Shelves
30. 30 传 Undertale: Blossoms That Never Fall 传说之下：永不飘落的繁花 A Wretched Human Licking Sugar off a Knife's Edge刀尖舔糖的屑人类Eastern Fantasy489k WordsOngoing (No CP + SF + HE + Upholding RightE = ?) In 201x, at Mount Ebott, Crow heard that no humans who went there had ever returned. So, with a missing-person flyer in hand and a bow on her back, she went to investigate. She saw Frisk trip over a vine and fall into a deep pit, so Crow jumped in after her. After freeing the Underground, Crow thought she had reached the end. But with Flowey’s prompting, she found Gaster and struck a deal with him… She would go uphold justice and grow stronger, while Gast 24Reads—Score—Shelves
31. 31 听 Listen Up, You Fools 听着，蠢货们 Li Xiaomi黎晓蜜Anime Fanfiction38k WordsCompleted [Undertale Fanfiction + Bad Guys + Nightmare + A Little Mind Reading] How should I put this? It's a pretty bad story, very mundane and meandering. I wanted to read it myself, so I wrote it, and since I wrote it, I published it. If you don't like it, please go easy on me when you criticize it. (This is blatant mistreatment of Nightmare, so hardcore fans, run! And I'm not going to address the protagonist's name.) 122Reads—Score—Shelves
32. 32 日 Being the Brightest Star Every Day 日常做最亮的仔 Ran Benran然本然Anime Fanfiction142k WordsCompleted Also known as My Little Sister Became a Little Bun One Day [Note: UT fanfiction + OOC warning + family-focused + lots of original headcanons + no CP + mostly everyday life + short story] … … What happens after someone dies of sudden cardiac arrest? "You start out as a ball of light, get two older brothers as a bonus, and have a natural talent for magic." Stars pushed up a pair of nonexistent glasses and answered with feigned solemnity. Beneath the peaceful years, what lies hidden? A treasure and 121Reads—Score—Shelves
33. 33 原 Genshin Impact: But It’s a Fatal Error 原神：但是致命错误 Crocodile Sauce Sauce Sauce Sauce Sauce沙鳄子酱酱酱酱酱丶Anime Fanfiction58k WordsOngoing [Discontinued] A note before reading: This Fatal Error isn't that Fatal Error. This one is from UT! (Don't mix them up.) Synopsis *Who... am I? *Where... did I come from? *I... think I *for got some thing... *I'm Geno... right? *No, I-I-I am am-I-I-I *fatal_error 4Reads6.5Score—Shelves

    Reader note

    You've asked the right person.

34. 34 e E4 Enters Aotu World e4来凹凸 User69096785用户69096785Anime Fanfiction944k WordsCompleted After someone dies, God gives him another chance. The protagonist must seize this opportunity. He goes on to become Error 404, an existence that surpasses God. Naturally, his first stop is the Aotu World. 311Reads6.9Score102Shelves
35. 35 原 Genshin Impact: ULBSans Powers from the Start 原神：开局ulbsans能力 Threefold Memories of Days Gone By三重往日时光Anime Fanfiction339k WordsCompleted (There are angst scenes, there are angst scenes, there are angst scenes. Important things must be said three times, though the angst is mild.) Liu Yang was an ordinary high school student on Blue Star. After an accident, he transmigrated to Teyvat and gained a System. From the start, he received the abilities of ULB Sans and became one of the many Archons. Realizing that the Archon War was about to break out, he joined Morax and others in founding the Guili Assembly. But his arrival caused rippl 378Reads7.3Score103Shelves
36. 36 衫 The Strange Tale of Shan and Yu 衫与鱼的怪谈之旅 Playing in the Mud in a Little Courtyard在泥巴小院玩泥巴Urban100k WordsOngoing [UT + AU + National Fortune + Urban Legends + Not a Power Fantasy + Not Mindless + No System + No Transmigration + No CP + Killer!Sans + Undyne] The author is a lazy slob, so there's no way I'm going to update regularly. This story leans toward comedy, with daily life as its main focus. (Of course, the everyday chapters are the best.) Special notice: You absolutely, absolutely have to read Chapter One! And you absolutely, absolutely have to read the prequel! Second edit: The book has officially 142Reads7.0Score—Shelves
37. 37 碧 Blue Archive: Becoming a Teacher and Showing My True Strength 碧蓝档案【成为老师拿出真实力】 hc Just Get Byhc得过且Anime Fanfiction296k WordsOngoing This novel has a male lead and no female lead, and gets a little angsty, but it's safe to read. On its own, the story has quite a few rough spots, so I recommend listening to the audiobook and choosing the cheerful young man's voice. Please, give it a rating already! Blue Archive is a 2D-style urban mobile game that has made a name for itself internationally with its beautiful graphics and engaging story. Not everyone gets to transmigrate, but Yuhan is one lucky person. Perhaps beneath this blue 49Reads—Score—Shelves
38. 38 当 When Sans Can Transmigrate Between AUs 当sans可以穿越au YOLOjingkAnime Fanfiction102k WordsOngoing The protagonist transmigrates into Murder Sans, equipped with a System. He punches Error 404 and kicks the King of the Multiverse (just kidding). He might reach demigod-level strength later on. 3Reads—Score—Shelves
39. 39 传 Undertale: TL 传说之下：TL Ah Long Ah Long Ah啊龙啊龙啊Anime Fanfiction47k WordsCompleted TL is an abbreviation for timeline. We don't know where time ends, just as we don't know where it begins. 27Reads—Score—Shelves
40. 40 U Undergoodluck LuckyFlowerAnime Fanfiction148k WordsCompleted [Undertale fanfiction] [Amateur writing (._.)] [No System] [The main cast are all native AU characters] [Any resemblance is purely coincidental] A human child named Clover falls into the Underground. Lucky Clover survives the fall and begins a strange and wonderful adventure through this bizarre place... After exploring the Underground comes a journey through the multiverse. Our AU has no ending!! Main cast: my original character Luck Sans, my OC Clover, and Dust! 65Reads—Score—Shelves
41. 41 自 A Wonderful Journey of My Own Making 自设的奇妙旅行 Yue Yi月壹Male-Channel Fanfiction39k WordsOngoing This is a brainless story, so read at your own risk. There’s a mountain of author-created lore, so please bear with me. It’s basically the backstories, tales, travels, and worldbuilding for various characters I’ve created. I can’t change the tags anymore, so they’ll have to stay as they are. 1Reads—Score—Shelves
42. 42 穿 Transmigrated as Sans, I Go Around Looking for Fun 穿越成sans到处找乐子 mgsansAnime Fanfiction47k WordsOngoing Looking and looking for fun, and finding a little fun. Someone transmigrates into Sans and awakens a Fun System. They are determined to travel between every AU. 43Reads—Score—Shelves

    Reader note

    Everything I could post has been posted. If you want to see them, you can check my bookshelf. (Click to see details, otherwise it's a bit messy.) First book: The protagonist transmigrates into a Horror. There is a romantic pairing. It's a Monster Hunter novel. The writing is good. There are extra chapters with scenes. If you don't like it, you don't have to read it. It won't affect the main plot. The early part mainly focuses on Sans's transformation into a Horror. The later part focuses on romance and other plots. Book 2: The protagonist transmigrates into Killer, and the daily life of the Bone Gang. Book 3: A crossover between "Dreaming of Becoming a Magical Girl" and "Undertale," with the world view taken from chapter 58 of the "Dreaming of Becoming a Magical Girl" manga. It's a fanfiction featuring both characters. Book 4: A self-created Bone character. The protagonist is honest and even a bit silly. His backstory is quite tragic, leaning towards the daily life of the Bone Gang. Book 5: A story about national survival, including movie scenes, with good writing. Book 6: The protagonist transmigrates into the world of Kuller and becomes his second personality. It's a story of mutual comfort and redemption amidst hundreds of massacres (I haven't finished it, so it's incomplete). Book 7: From Sans's perspective, with a system, apocalyptic setting, requires some thought (you really have to read it yourself, I haven't read it). Book 8: Roughly the story of Killer traveling through the multiverse, making friends, and saving those in timelines with similar fates. Book 9: A fanfiction of NM (Nightmare), focusing on the daily life of the Bone Gang. Book 10: Haven't read it? Read it yourself. 👀 Book 11: Haven't read it? Read it yourself. Book 12: The protagonist transmigrates into the original Sans, and the fate of the nation is intertwined with watching a movie. Book 13: Haven't read it. Book 14: Haven't read it. Most importantly: You MUST read the synopsis! You MUST read the synopsis! You MUST read the synopsis! Don't miss out! And don't badmouth any authors! Most of the books I haven't read have good reviews, and even those without ratings have mostly positive reviews. (I previously read a really good fanfiction, but the author was criticized by some people, so I dropped it. I'm really sorry if I offended you 🙇‍♀️🙇‍♀️🙇‍♀️, it's just that this fandom is too cold, there's too little fanfiction, and I'm afraid there won't be any more.) Also, please give it a like! I'm almost dead after writing just over 600 words, please 🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏

43. 43 憧 Aspiring to Become... a Steamed Bun Spirit? 憧憬成为，馒头精？ A Chan sdh阿铲sdhAnime Fanfiction388k WordsOngoing A crossover fanfiction between Looking Up to Magical Girls and Undertale, written by a fan of both. If you can, I recommend getting familiar with both original works first, just in case you have trouble following the plot (*´ω`*). To avoid conflicts with the original works’ settings, this book’s world always follows the setting from the latest manga chapter available, Chapter 58. (Note: The book includes some elements from a certain game that’s been going from strength to strength.) 215Reads8.0Score—Shelves
44. 44 完 Oh No! Sans Has Become a Teacher! 完辣！sans当上老师辣！ Just a Judge Who Plays with Ink玩墨水的审判官罢了Urban144k WordsOngoing (For fans of transmigration, Systems, and underground dwellers.) After transmigrating into an age of supernatural powers, I become a catgirl and open a school for people with supernatural abilities. But the teachers at the school... are actually Sans. He looks kind of terrifying... People who awaken supernatural powers can become ability users. Their ranks are E, D, C, B, A, S, SS, and SSS. Their stages are Common, Fine, Excellent, Epic, Legendary, Collector's Edition, Radiant, and Mythic, with 2Reads—Score—Shelves
45. 45 国 National Fate: Sans Has Something to Say 国运：sans表示有话要说 Just Keep Smiling for Now现在只要微笑就好Modern Romance50k WordsCompleted “I” was a typical 21st-century college student, until a truck suddenly came barreling down the road and sent “me” to another world. In short, “I” became a soul and was stuffed by some scientist whose surname started with G into the soul of a little skeleton whose surname started with S. But “I” couldn’t move or speak. Then, after a few well-known events, the monsters came to the surface. At last, “I” could speak! Though only to Sans. So every day, “I” rambled on inside Sans’s head. Sans: ... Thi 156Reads—Score—Shelves
46. 46 传 Undertale: A Journey of My Own 传说之下：属于我的一场旅途 Looking into the Distance遥望至Anime Fanfiction942k WordsOngoing What is set in stone cannot be changed. All we can do is accept it. After dying suddenly in an accident in his previous life, Heripons transmigrates into the world of the game Undertale! But as the price, he loses some of his memories. Guided deliberately by Frisk, the game's original protagonist, he manages to reach the Pacifist ending and recover some of the memories he lost. He thought he could only go on living in someone else's body and appearance, but an encounter planned long in ad 1.1kReads8.7Score138Shelves

    Reader note

    They're all serialized, so it feels okay.

47. 47 国 National Fate: Horror Only Wants the Peace Route 国运：horror只想要和平线 Naming Is Too Hard, Forget It取名太难不取算了Anime Fanfiction75k WordsOngoing Horror had finally found a peaceful ending, only to have a mysterious creator steal their memories and throw them into the National Destiny game. [A few things to know before reading: This is my first time writing a novel. It’s purely for fun. Any AUs are my own versions. It’s especially chaotic. The National Destiny game includes identity reveals, memory loss, watching scenes, and summoning people. The writing is at a pure elementary-school level. Updates are whenever I feel like it.] 9Reads—Score—Shelves

    Reader note

    I don't know how to describe it, but these books have very detailed character portrayals and novel plots. Overall, they're very enjoyable. Yes, I have many more books on my bookshelf that I might want to check out.

48. 48 成 My UT Journey as a Sans Soul 成为sans灵魂的我的UT之旅 Skeleton Wearing the 4 General's Skin穿着4总皮肤的骷髅Anime Fanfiction142k WordsOngoing A devoted UT fan, Li Xiaoti spent several days gathering every bit of information about UT and building a massive website about the UT universe. But due to health problems, he unexpectedly ended up in the world of UT, bringing the website he had created along with him. The bad news was that he was only a soul. The good news was that he was Sans's soul. When he suddenly looked at Sans, he saw more than just Sans before him: a faint image of Killer appeared too... 183Reads7.1Score—Shelves

    Reader note

    Choose from these yourself. Then I'll recommend a few more: *National Destiny: Sans Can Sweep Away Even When He's Sick and Weak*, *[Dreamtale] Changing Dreams*, *Ordinary Legends*, *Twilight Legend*, and *On the Compatibility of Little Sun and Dark Maggots*. For the last one, I suggest reading the synopsis before reading (don't read if you don't like it). I also discovered two new books: *Becoming Errer* and *Transmigrated into Horror* (maybe not, it says they're by other authors).

49. 49 传 Undertale: The Black Jade Legend 传说之下，墨玉传说 Demon Realm魔域Anime Fanfiction53k WordsOngoing (No System) (Probably no female lead) (Mostly laid-back daily life at first, and even more laid-back daily life later.) Mo Yu, also known as Fishing or Demon Realm. I’m terrible at coming up with names, too. A new writer’s first work. Basically, it’s an adventure about someone who accidentally ended up in Undertale at the point in time when only Chara had fallen. —Reads—Score—Shelves
50. 50 传 The Unsolvable Undertale 传说之下无解 Teasing Ink Lord撩墨君Anime Fanfiction150k WordsCompleted An unsolvable problem, yet people keep trying to find an answer, even though they don't want it solved. Some are always searching for a path. Along the way, some have forgotten why they set out on it, but there will always be others who keep following it. A note from the author: This book contains a lot of original and personal headcanon. If you're not good at reasoning things out, I recommend not reading it. If you insist, prepare an antidote and something to help you cope, because readers who 20Reads—Score—Shelves

Other lists with UT: I Joined the Bad Time Trio to Fight a Green-Tea Bitch?!