UT: Are There Any AU Stories? No System Stories or Anything Like That, Though Transmigration Is Fine ut：有没有au（别发系统之类 发个穿越也行）

1. 1 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

   The first book is about Killer and his second transmigrated personality. No romantic pairing, no system, and the transmigration is very well-written and doesn't feel abrupt at all. Highly recommended. The second book is also good; Error is forced to play the role of a regional poet. No system, no romantic pairing. The third book, *Becoming Hrror*, seems to be unavailable for posting, so I'm using text. It tells the story of Hrror and his jealous system. It has a system; long live Muder and Hrror! (I'm a fan of all kinds of stories.)

2. 2 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
3. 3 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

   Reader note

   These three are quite good; they are all well-written time-travel novels.

4. 4 M Murder, the One Who Carries Out the World's Will Murder，践行世界意志之人 oirAnime Fanfiction148k WordsOngoing [Anthropomorphism + System + Native, Not a Transmigrator; Undertale derivative, CP: Murder x Killer] … In the ceaseless cycle of reincarnation, who can remain untouched by endless repetition? Murder, born of Dusttale, was unexpectedly bound to a “System” at the end of a timeline. From then on, he was forced to travel through different times and spaces, helping the native Sans solve problems. After completing eighty-one missions, the plan to erase humanity would finally reach its conclusion! To d 17Reads6.7Score—Shelves

   Reader note

   The second book doesn't have a system, while the first one does, focusing on Murder and featuring a Murder x Killer pairing.

5. 5 传 Undertale: Riding the Bus Through Hell Straight to the Stars 传说之下：随边狱巴士直抵群星 oirAnime Fanfiction149k WordsOngoing The multiverse collapses into chaos, and universes overlap and merge. Countless timelines have reached their final hour. Murder, a murderer, and the Limbus Company he belongs to... Can they lead their selves from different possibilities to forge their own fate in a world where sins resonate? Come, face your sins and set your E.G.O free. (Face the Sins, Save the E.G.O) Undertale X Limbus Company X Lobotomy Corporation Undertale X Limbus Company X Lobotomy Corporation 41Reads—Score—Shelves
6. 6 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

   Reader note

   Then I'll recommend a few more books: *National Destiny: Sans Can Still Sweep Away Even When He's Sick and Weak*, *[Dreamtale] Changing Dreams*, *Ordinary Legends*, 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 that).

7. 7 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
8. 8 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
9. 9 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

   Reader note

   There are also books on the bookshelf

10. 10 传 Undertale: Dust's Search for His Bro 传说之下Dust劳弟的寻哥记 UT AddictUT重度依赖Anime Fanfiction279k WordsOngoing [Undertale + OC + multiverse] Pure fanfiction. Where it differs from the original, please treat it as my own interpretation. Apologies for any out-of-character moments. Mostly slice-of-life and battles, with pairings and crossovers. The characters may not be very well developed in this first book. 309Reads—Score—Shelves
11. 11 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
12. 12 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
13. 13 原 Genshin Impact: The Skeleton from Amphoreus 原神：来自翁法罗斯的骷髅 Too Lazy to Move Fungus懒得动真菌Sports589k WordsCompleted [Players, gacha pool, mainly Genshin Impact] After finally recreating Amphoreus, I somehow ended up on a continent called Teyvat. As the saying goes, since I’m already here, I might as well settle down. Player: So that’s why you’ve been to all seven nations? Sans: I’ve got some stir-fried snow here. It won’t cost 9,999, or even 999, just 99,999 Mora. Player: Here you go. Sans: Sorry, but I don’t have any stir-fried snow. (Shrugs) [The synopsis is beyond my abilities.] 192Reads—Score101Shelves
14. 14 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
15. 15 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
16. 16 s Sans: The Multiverse Timeline sans：多元宇宙时间线 A Sunflower Who Speaks in Elegant Prose一只出口成章的向日葵Eastern Fantasy411k WordsOngoing [Original AU]+ [Transmigrate through different AUs]+ [Filling in AUs to make them angst-free (includes Axetale, ErrorTale, The Flower Has Faded, and more universes later)]+ [Poem of the Region]+ [Bad Sans Party]+ [No Angst] [I beg you, dear readers, please give this newbie's work a chance. I'm seriously begging you ꒦ິ^꒦ິ, down on my knees ○|￣|_] Genocide Route Frisk/Chara/the player walked down the corridor toward the save point, then turned to look at the figure leaning behind a pillar. The fi —Reads—Score—Shelves
17. 17 以 Clearing Genshin Impact in the Style of UT 以UT的形式通关原神 An Ordinary Player一个普通的玩家Anime Fanfiction362k WordsOngoing I’m Yi Yang, an ordinary person with a somewhat complicated past… or no, I should call myself a “Fusion Monster” now, one of those from the True Lab. Please don’t mind my appearance too much. I’m a pacifist, and I just want to make a few positive changes in my spare time. But things haven’t gone quite according to plan… First, not being able to communicate with people from a world where “monsters” exist is pretty rough. And secondly… I don’t remember agreeing to let you freeload on my soul and b 47Reads6.5Score—Shelves
18. 18 国 National Fate: But Xiaohua 国运：但是小花 User30021124用户30021124Anime Fanfiction182k WordsCompleted Undertale, UT, national destiny, no female lead, no CP, Flowey, AU, revealing the past. No transmigration, no System. A fanwork based on the original, set on a special timeline. As you can see, the protagonist of this story is Flowey, or rather, Asriel. Flowey's characterization will stick as closely to the original as possible. There will be AU cameos. I'll try to follow the original settings for the AUs, but there are too many of them, so anything that differs from canon can be treated as my o 372Reads6.9Score—Shelves
19. 19 传 Undertale: I Transmigrated into the Hypocrisy Route from the Start 传说之下：开局穿越伪善线 Wandering Hacker浪客HackerAnime Fanfiction145k WordsOngoing Bai Ye, who had terminal cancer, closed his eyes as he lay dying. When he opened them again, he had transmigrated into Undertale, but something about this world felt wrong... There are elements absent from the original, and events are veering off the original plot. The butterfly's wings beat faster and faster, and Bai Ye, a transmigrator, must risk everything in a desperate fight for the fate of the entire world! “For this world!” 200Reads6.6Score—Shelves
20. 20 原 Genshin Impact: Dust-Stained Fontaine 原神：尘染枫丹 DeafgsansAnime Fanfiction267k WordsCompleted Dusttale Murder!Sans was battling Chara in the Core when he accidentally fell into it. He should have been erased by the timeline, but instead he unexpectedly ended up in Fontaine... Wait, why has he gotten smaller? And now he’s caught up in some inexplicable romantic entanglement. He’s told everyone he won’t fall in love with anyone... right? As time goes on, Murder discovers that a lot of things aren’t right. Or rather, there’s something wrong with him! Rules of this story: 1. “Contempt” is th 120Reads—Score—Shelves
21. 21 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
22. 22 传 Undertale: The Hardest Perfect Ending to Achieve 传说之下：最难达成的完美结局 Jia Ren Lu Wei Yi甲人路位一Sports208k WordsCompleted The story follows the plot of the game Undertale. The protagonist is a transmigrator who knows nothing about the game’s story, and does his best to achieve the “perfect ending” as he feels his way forward! How exactly do you trigger the perfect ending? How does a complete beginner get into Undertale? This book gradually immerses readers in the game’s story through the protagonist’s perspective, bringing its battles, puzzles, easter eggs, and more to life. The story moves at a slow pace, so pleas 204Reads8.0Score—Shelves
23. 23 传 Undertale! Why Is There a Creeper Here? 传说之下！为啥这里有只苦力怕？ Frosty Someone Is a Creeper霜某是只苦力怕Anime Fanfiction73k WordsCompleted The power levels in this story are completely broken, so please set your brain aside before reading... (Don't worry, they won't fall apart early on, at least not on a narrative level. If you're here for the power scaling, you can let the chapters pile up first.) Perk Helmet arrives in the world of Undertale and sets off on an adventure... With his ability to control things with his mind, he travels through all kinds of AUs, and in the end... —Reads—Score—Shelves
24. 24 原 Genshin Impact: A Journey Through Teyvat’s Dust 原神：尘埃的提瓦特之旅 Dust Watching the Show看乐子的尘埃Anime Fanfiction101k WordsCompleted [The author only wrote this book out of boredom, so the writing might not be very good.] A white room, A painful memory, A determination that will never die, A madman? A wondrous adventure, A chance to atone, A loyal friend. And so this adventure begins... 129Reads—Score—Shelves
25. 25 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
26. 26 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
27. 27 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
28. 28 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
29. 29 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
30. 30 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
31. 31 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
32. 32 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
33. 33 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
34. 34 U UT: Daily Life After Transmigrating into an AU UT：穿越AU的日常 Bing Bing Binggao冰冰冰糕Anime Fanfiction228k WordsOngoing The story of an ordinary person (really) who enters Undertale, transmigrates through various AUs, and eventually makes it home. Li Qinqian takes the alias Ling Bing and begins searching for a way home across different worlds. Her arrival stems from revenge. Her departure stems from reconciliation. Her final journey home is accompanied by flowers as well as thorns. Less serious introduction: The character my cousin wrote is out for revenge against me. What should I do? Help, I'm in a hurry!!! Som 41Reads—Score—Shelves
35. 35 传 Undertale: Am I Playing Sans? 传说之下：我扮演sans了？ The Sourest Fish with Pickled Cabbage最酸的酸菜鱼Anime Fanfiction775k WordsCompleted (Transmigration + OOC + chat group) Wait, how did I become Sans from Undertale? The System floating in the air answers all his questions. And from the very beginning of his transmigration, he’s thrown into a hell-level challenge. After completing it, he must travel to different parallel worlds under Gaster and the System’s supervision. (Worlds completed so far: Original, Horror, Dust, Swap, KTT, and Insanity) 807Reads7.3Score103Shelves
36. 36 原 Genshin Impact: I Become Lazy Bones Sans from the Start 原神：开局变成懒骨头sans I'm Really Shi Le我真是时乐啊Anime Fanfiction358k WordsCompleted [Undertale + Genshin Impact + Nearly Invincible + System + Infinite Flow + Tearjerker + Protagonist’s Emotional Growth] “Dude, how is this lousy skeleton so strong?” After being blown to bits by Yuan Shan for the 1,145th time, Shi Le, an 80-year-old Undertale fan, thought back on his pathetic life and finally snapped (sob). When he woke up again, he was already in Mondstadt. “Dude, did I actually become Sans?” 509Reads7.6Score100Shelves
37. 37 传 Undertale: Stuck Underground and Sick of Chocolate 传说之下：人在地底，讨厌巧克力 Ba Yun Huiye八云辉夜Anime Fanfiction25k WordsCompleted A long spell of rain draws Shen Yan, a graduate student in history, back to the old Shen family residence in the ancient town of Duchuan. In a dust-covered camphorwood chest in the west wing, he stumbles upon a bronze fish tally engraved with Qin seal script. The tiny inscription inside it, “A boat capsized at the mouth of the river; not one of the thirteen survived,” eerily echoes the mystery of a Qin dynasty shipwreck unearthed at Jiangkou in the 1980s. Rumors that Shen's ancestors served as 6Reads—Score—Shelves
38. 38 网 Online Game: Your Daddy Sans Is Here! 网游：你杉斯大爹来咯！ Shan Si Hou Xing杉斯后行Sports228k WordsOngoing [Female Lead] [No CP] [Sans as a genderbent girl] [Game] Lin Luoxue is both unlucky and lucky. In the world she transmigrated to, she made it into the top ten worldwide in a game called [Seventh Day], only to unexpectedly transmigrate into the game a second time. She even became Sans from the game [Undertale], which she played in her previous, previous life! Lin Luoxue looked at her own fair hands and let out a piercing shriek: “Why am I a girl?!” After seeing the despair of the white-haired gi 739Reads—Score103Shelves
39. 39 恐 A Legend of Fear, Karma, and Retribution 恐惧传说因果业报 The Eternal Sufferer of the Roman Empire古罗马帝国的患天常Anime Fanfiction737k WordsOngoing A pale eye… a game for amusement, and a gray door behind a waterfall. As He creates the protagonist of this story… Horror, naturally… his story will have nothing to do with “peace.” (I’m a new author, so please bear with me.) 180Reads—Score—Shelves
40. 40 原 Genshin Impact: Liyue’s Skeleton Judge 原神：璃月的骷髅审判官 last Chenyelast尘埃Anime Fanfiction323k WordsCompleted [Warning: This book contains a romantic pairing, Sans x Yanfei. Please don’t read if that’s not your thing.] [No System + Plot + Some Original Elements] After the timeline collapses from being reset again and again, Sans, who was forcibly made to absorb a human soul, is accidentally cast by the chaotic timeline into Teyvat, to Liyue, the so-called commercial empire. After negotiating with Liyue’s ruler, Morax, he signs a contract and becomes a laid-back judge in Liyue... Sans: It feels... famili 167Reads—Score136Shelves
41. 41 绝 Zenless Zone Zero: Sans's Bone-Carving General Store 绝区零：sans的骨头万事屋 Meng Xingcheng梦星澄Anime Fanfiction50k WordsCompleted [This story combines Undertale and Zenless Zone Zero. Since the author likes UT more, the story may lean a little more toward UT.] [For example, Frisk is recognized as a Void Hunter and is currently staying at the embassy in the Ipo District.] [After the monsters left the Underground, the fluffy king named the place where they settled the “Ipo District.” The name has been officially recognized.] After the Underground is freed, Frisk becomes a “peace ambassador” between humans and monsters. But o 73Reads—Score—Shelves
42. 42 骨 Bones in Luofu: From the Start, I Smash a Yellow Tree-Fork Monster in the Face 骨在罗浮，开局砸黄树杈子怪一脸 Lord of the Abyss凌渊之主Anime Fanfiction165k WordsOngoing [Lighthearted, Funny Slice of Life] [A blend of chat group, viewing secret realms, and other elements] [Not an invincible protagonist] [Minor creative liberties] What do you do when you’re a lazybones and get cut down into the Luofu Xianzhou? Sleep! You bet I’m going to sleep! I, Sans, came to the Luofu for just three things: slacking off, goofing around, and giving up! 50Reads—Score—Shelves
43. 43 传 Undertale: A Happy Ending Will Come at Last 传说之下：美好的结局终将到来 A Lively Spirit灵动的心性Anime Fanfiction235k WordsOngoing An Undertale fanfic (please skip to chapter 40 or later to start reading, thank you. The main plot will still follow the same order.) Plot introduction: This world is different from the original Undertale. For unknown reasons, Frisk keeps taking the Genocide Route, but somehow, Frisk has gained control over their actions. The main goal is to turn every bad ending into a happy one. (It's a multiverse!) About the characterization: After doing the Genocide Route so many times, Fu may not be as inno 2Reads—Score—Shelves
44. 44 化 As UKB: Seriously, Why Is the Multi-World Prosecutor Still Chasing Me? 化身UKB：不是，多审还在追我 Xiao Yuan-chan小源酱Anime Fanfiction292k WordsOngoing "No System, not invincible, few tearjerkers (because the author isn't very good at writing them either)" AU title: [Undertale: Karma Fire Samsara] (Suitable for casual play, not too exhausting.) Li Yuan stayed up all night grinding CTT, then died suddenly along with his computer. When he woke up, he had become Sans. But the player here didn't seem like a good sort. After twelve consecutive failures, the timeline went a little haywire on the thirteenth attempt. A secret beneath the cliff. A stran 419Reads6.7Score—Shelves
45. 45 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

    Reader note

    Overall, it's very good, and the setting is quite complete. I hope someone will take a look at my personal AU.

46. 46 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
47. 47 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

    For example, this (good books that nobody reads).

48. 48 U Undertale Fanfic: A Few Things About a Certain Parallel Universe UT同人：某平行宇宙的那点事 Great Again Today今天也很GreatAnime Fanfiction356k WordsOngoing [Everyone is humanized + tons of headcanons + multiple pairings and everyday life] (This is my first time writing a book, so please bear with me.) (Please don’t get too attached to the original characters, or they’re guaranteed to go out of character.) As you can see, the characters in this somewhat strange Undertale AU have all been turned into humans. There are no bone-filled brawls across the multiverse here, just a simple, peaceful daily life, with the occasional little trouble cropping 103Reads—Score—Shelves
49. 49 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
50. 50 绝 Zenless Zone Zero: The Judge from UT 绝区零：源自UT的审判者 Meng Xingcheng梦星澄Anime Fanfiction53k WordsCompleted [Zenless Zone Zero]+ [Honkai: Star Rail]+ [UT]+ [MC]+ [No Male Lead]+ [Fluff]+ [Memes/Comedy/Daily Life] (Please don’t flame if it’s not your thing.) A parallel universe of UT. Among the many AUs, the Star Domain is an unremarkable one, and it is still being rebuilt even now. The Star Sisters, Xingcheng and Xingyun, currently live in all of CORE!Frisk’s Omega timelines. While creating their own world, the sisters often travel to other AUs, calling it a way to balance work and rest and gather ins 23Reads—Score—Shelves

    Reader note

    It's an UT+Zero series; the author has many fans. If you're interested, you can check it out and show your support.

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