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- 51 Undertale: The Genocide Route 传说之下【屠杀线】 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
- 52 From the Start, I Slit My Wrists and Died, Then Transmigrated into Undertale 开局割腕归天，穿越进传说之下 The male protagonist is named Tai An. In his original world, he was a complete and utter loser, and it seemed like Heaven itself was out to torment him. After his mother died by suicide, he slit his wrists and killed himself too. But after committing suicide, Tai An not only survived, he transmigrated into a game called Undertale. He also acquired a System and began living a life with cheats enabled. 1Reads—Score—Shelves
- 53 I’m the World Boss in Nazarick 我在纳萨力克当世界BOSS This book is an author Xp amalgamation, featuring Undertale AUs, Sans turning into a dragon, SF, a flying squirrel and a transmigrator (not Sans), along with a whole series of strange fantasies. It should still make sense and be readable, though, so if you can accept that, then... A lone “bone” wandered through the chaotic flow of time and space. After encountering a temporal storm, his existence was completely digitized and swept into the nearest parallel world... “Is this how the game cho 2Reads—Score—Shelves
- 54 Martial Souls: The Dust-Covered Assassin 武魂：布满尘埃的杀手 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
- 55 Tale of Dust: An Invitation from a Mysterious Organization 尘埃传说，神秘组织的邀请 Sans was tired of watching humans slaughter his kind over and over. He couldn't bear to see his family and friends die before his eyes again and again. He decided to fight back. But no matter what he tried, he couldn't defeat the humans. Even when he chose to kill his family and friends to increase his strength, he still ended in failure. Then, a mysterious organization suddenly invited Sans —Reads—Score—Shelves
- 56 Undertale: Monsters and the Children of Light 传说之下之怪物与光之子 This is the author’s first novel. There may be some heartbreak later on, but the ending is happy. Kaka: Ever since the memory stones appeared, we’ve finally been able to take a break. Pinggu: They’re only projections, after all. They can represent us in the animations, but we still have to manage everything in Valley of Triumph ourselves. Ding! Congratulations, both Hosts, on binding to the Peace System. I’m System 001. Pfft! Pinggu, who had been drinking tea, spat it out, splashing Kaka, who wa —Reads—Score—Shelves
- 57 Undertale: A Parallel World of the Hatred Incident 传说之下：仇恨事件的平行世界 Negative emotions. Every world produces negative emotions at every moment. One kind of negative emotion is called “hatred.” In parallel worlds, these hatreds combine endlessly, giving rise to a vast evil force. These forces completely destroy the places that gave birth to them. They seek neither power nor supremacy. Their true goal is to destroy everything! —Reads—Score—Shelves
- 58 Undertale: A World Gone Wrong 传说之下，错误的世界 A System that had just passed its evaluation couldn't wait to find its first Host. A Judge who had just experienced an era of peace. Everything seemed to fall perfectly into place, but it was all just part of “his” plan. 50Reads6.5Score—Shelves
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59
Genshin Impact: I Become Lazy Bones Sans from the Start 原神：开局变成懒骨头sans
[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?”
510Reads7.6Score100Shelves
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60
Undertale: The Orbiting Ball Universe 传说之下：环绕球宇宙
*This story takes place in Undertale Multiverse #7913. In this universe, Frisk completed the Genocide Route, slaughtering nearly every monster. In the final corridor, Sans unexpectedly broke free of the original plot and killed Frisk {in a situation similar to The Poem of the Underworld}, then escaped to the palace beyond the corridor, where he met Asgore and Flowey. Sans’s appearance caused Flowey to kill Asgore prematurely, bringing the plot to a halt and causing the data to collapse. Ink Sans
8Reads—Score—Shelves
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61
In Douluo Dalu, I Got Sanity Powers from the Start 人在斗罗，开局获得san能力
What would it be like to have Sans's Eye of Judgment? And what if you also had the unparalleled Gaster Blasters (Bone Cannons)? [Sans's abilities here are based on fanon and the author's own interpretation, so please go easy on the Sans fans.] Qian Shouyue, an utterly ordinary high school senior, was killed at home while trying to get someone to slash the price on Pinduoduo. By a strange twist of fate, he ended up in the world of Douluo II! Furious, he cursed Pinduoduo for its shady practices, o
12Reads7.6Score—Shelves
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- 62 Sans's Bizarre Adventure 衫斯的奇妙冒险 [Fanfiction] [System] Across the multiverse, the Author had grown numb. Creating an AU had left him physically and emotionally exhausted. His imagination had run dry as he tried to make a new vessel. And once his creations learned the truth, they went their separate ways and turned against him. The author, Sans, looked at the pen in Sans's hand and smiled: [In the end, I'll be killed by my own creation. All I wanted was to feel again. What did I do wrong!] “You did nothing wrong. But I'm against —Reads—Score—Shelves
- 63 A Laid-Back Life as a Transmigrated Skeleton 穿越成骷髅的闲鱼生活 The author is a newcomer, so please don't bash me if you don't like it. If you came here for the sci-fi, it will show up later. This story contains emoticons. In a gloomy cemetery, a bony hand reached out from a grave. "The Strongest Bone King System is loading" A voice suddenly rang out… —Reads8.2Score—Shelves
- 64 UT Transmigrates into Anime: The Pokemon Arc UT穿越动漫之宝可梦篇 (Currently being rewritten, so it's best not to read this yet) You clicked in? Hello, everyone. Welcome to my experiment. To put it simply, I take code from Undertale and use it to insert myself into other worlds for observational experiments. Why? For the entertainment. Come on, scroll down. 20Reads—Score—Shelves
- 65 The Unsolvable Undertale 传说之下无解 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
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66
I Am Sans 我，即是sans
(A new author writing for the first time. Please be kind if it’s not your cup of tea.) Undertale fanfiction Zhang Ran was already dead, but he discovered he could crawl out of his own grave. He thought he was a zombie, but then... He accidentally took in a younger brother and tried to survive in the world of Undertale. Undyne: I can't beat him! Papyrus: My brother is the best! Chara: ... The grass on his grave is already two zhang tall. (He may transmigrate to other worlds in the future.)
26Reads—Score—Shelves
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- 67 Undertale: Sans's Revenge 传说之下：sans的复仇 The author writes this in a pretty messed-up way, so read at your own risk. Frisk massacres Sans again and again, and Sans dies over and over. Then, one time, Sans suddenly remembers the moment he and his friends were killed. It’s time to settle this, Frisk! 13Reads—Score—Shelves
- 68 Sans's Anime Crossover Battle Royale sans的综漫大乱斗 A huge anime crossover!!! What happens when anime characters meet their creators? A grand crossover adventure with Sans. Dio battles Diavolo to save his son. Saber battles Saber Alter. Altair battles Aizen. Eren and Hajime Isayama watch Attack on Titan together. The protagonist can return to places he has transmigrated to, and anime characters who have appeared will show up again later. Dio's son, Giorno, and Sakuya Izayoi, a character born because of him: what sparks will fly when these charact 31Reads—Score—Shelves
- 69 National Fate: Sans Tried to Slack Off, but Failed 国运之sans摆烂未遂 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
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70
Beast Taming: Together with My Bone Brothers 御兽：和骨兄弟一起
[UT + Sans + Papyrus + All UT Characters + AU + Legally Cat-Eared Shota + Beast Taming + Everyday Life + All Original Undertale Characters] Mostly sweet, with a little angst. A complicated mix. No female lead doesn’t mean no CP, right? The CP in this book is Lin He and Chara (“split self”). This book is mostly everyday life, though things get crazy sometimes. Lin He was an ordinary high school student. While playing an Undertale fan game, his keyboard started malfunctioning, his blood pres
92Reads—Score—Shelves
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- 71 UT: From Minecraft to Undertale UT：从我的世界到传说之下 By chance, Ke Yimeng transmigrated into My World and obtained a Multiverse Panel. A mysterious person told him that they would explain how to use it five hundred years later. After enduring an incredibly difficult five hundred years, Ke Yimeng found that mysterious person and used the Multiverse Panel to travel to another world… (New author with limited ability. Please don’t flame me if it’s not to your taste.) 68Reads—Score—Shelves
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72
Jingju Cats: Ink and Clouds, Dreams on Paper 京剧猫：云墨幻梦，落笔如影
[No Angst + No System + No Romance + Multifandom Fan + Steady Updates + Slow Paced + Some Original Headcanons] (I have no idea how to write a blurb, so I just threw this together. Please don't take it too seriously. Also, I started writing this because I couldn't find the kind of story I wanted to read, so I decided to write one myself. My writing may be a little rough, so please bear with me.) Disclaimers done. Here's the real blurb... "Friend, have you ever heard this land's cries of pain? Hav
196Reads8.8Score—Shelves
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- 73 Honkai Impact 3rd: Undertale Legends: Creation: Bronya 崩坏三传说之下：创造：布洛妮娅 All of this is old lore. If you want to see the real story, please make your way over to Legend of the Collapse: Bronya Is Creating... Thank you for your support!!!! —Reads—Score—Shelves
- 74 UT Glitch Incident UT差错事件 Transmigrate to the UT world? Join Chen Ye and the main cast as they explore this strange UT world. *Keep your determination!!! [This book has no comedy whatsoever•Seriously] 1Reads—Score—Shelves
- 75 On Transmigrating into Undertale 论穿越到传说之下这件事 The story of an “ordinary person” who transmigrates to Undertale and strives to achieve the perfect ending. (Please point out anything that could be improved. The protagonist may not have a pairing.) I’m not good at writing synopses, so please read the story. This book is also titled: “An Idiot’s Journey Through Undertale.” (Being reset; chapters xx onward have already been reset.) 77Reads7.0Score—Shelves
- 76 Skeleton Evolution: Starting as a Goddess's Summon 骷髅进化:从被女神召唤开始 Jiang Cheng is reborn in a game world as a skeleton summoned by a beautiful female player using a skeleton summoning spell. A skeleton like this is even more disposable than cannon fodder! Luckily, he has an Infinite Evolution System! Skeleton evolution, Skeleton Dragon General, Death Tyrant, Undead Overlord! From then on, the game world has a god-tier skeleton who makes players and NPCs alike wail in despair. “Holy crap! Why can that skeleton change its weapon at will, and why are its attack an 16.8kReads8.9Score2.6kShelves
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77
Undertale: It All Begins with Transmigration 传说之下：从一场穿越开始
For reasons unknown, a human arrives in the game Undertale on a soul level. The compatibility between their identities and souls leaves them barely able to tell who they really are. Are they Sans, a human, or somehow both? Here, they seek the answer. And when they finally find it, they will shatter the chains of fate and set out into the boundless cosmos to create a story of their own. (A large number of characters will appear in this book, and many redesigns have already been planned: the UKB r
922Reads—Score109Shelves
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- 78 Feather’s Half-Alive Feather的半死不活 [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
- 79 Zenless Zone Zero: Sans's Bone-Carving General Store 绝区零：sans的骨头万事屋 [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 68Reads—Score—Shelves
- 80 Genshin Impact: A Journey Through Teyvat’s Dust 原神：尘埃的提瓦特之旅 [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
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81
System: The Myriad Realms! Creating the Backrooms! 系统：世间万界！创造后室！
In short: The protagonist dies in Chapter One, then comes back to life and gains multiple personalities, including Sans and others, some of whom aren't even human. He then uses the System to gain the privilege of building Backrooms. Then space-time shatters, and a whole lot of other stuff happens, blah blah blah. God should come. Everyone can be Jesus, but no one can be Jesus. The passage to God is closed, fellow believers... Maybe this is an opportunity. But now, God has come to take care of us
17Reads—Score—Shelves
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82
Genshin Impact: Liyue’s Skeleton Judge 原神：璃月的骷髅审判官
[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
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- 83 Judging Villains Across All Worlds with Sans’s Powers 用sans的能力审判万界反派 What is coming? An Arbiter. Have you ever heard of an Arbiter who can control gravity? An Arbiter who can wield a Dragon Bone Cannon? An Arbiter who can become a god? That’s right, the Arbiter who judges all worlds and stands against the villains is named Chen Feng. He even founded the Arbiter Association. You sinners, prepare to face judgment! (A reader-created shared world, no harem, no female lead, no System, and no saintly protagonist.) 1Reads5.2Score—Shelves
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84
Undertale: Riding the Bus Through Hell Straight to the Stars 传说之下：随边狱巴士直抵群星
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
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85
Zenless Zone Zero: The Judge from UT 绝区零：源自UT的审判者
[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
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- 86 Sans's Transmigration Journey Sans的穿越之旅 The author, Feiyun, has actually played Undertale. I'm not a poser, and I'm definitely not some meme-obsessed kid!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 1Reads—Score—Shelves
- 87 Undertale: The Black Jade Legend 传说之下，墨玉传说 (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
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88
Aspiring to Become... a Steamed Bun Spirit? 憧憬成为，馒头精？
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
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- 89 Undertale: Blossoms That Never Fall 传说之下：永不飘落的繁花 (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
- 90 Beneath the Gnawing Hunger 饥辘之下 A little girl named chara accidentally falls into the Underground, where she meets all kinds of strange monsters: the peculiar Flowey, the gentle Toriel, the squinty-eyed Frisk... chara seems hungry, very hungry... Every time she dies, an unbearable hunger consumes her. Will she eat all the monsters? —Reads—Score—Shelves
- 91 Unbelievable! Vengeful Ghosts Have Arrived, So Where Did You Get a Billion Hell Coins? 离谱！猛鬼降临，你哪来十亿冥币 (Supernatural horror + unconventional hoarding + the apocalypse arrives + underworld tycoon) The supernatural descends upon the world. How could you lose after burning ten trillion in ghost money? Burn a thousand yuan in ghost money, and you can get a foot massage at a haunted bathhouse. Burn ten thousand, and you can book out a haunted bar. Burn a hundred thousand, and you can buy a luxury car at a haunted train station. … Haunted car salesman: “Boss, the ten Netherworld sports cars custom-mad 13.8kReads8.8Score1.5kShelves
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92
Genshin Impact: Giving the Heavenly Principles a Good Person Card from the Start 原神：开局给天理好人卡
(Mostly everyday life + romantic rivalries + the author’s first time writing + the System is purely a tool) The young man seemed to have been picked by the god of misfortune. His life had been one streak of bad luck after another. But after collecting all the Good Person Cards, a new life came his way. Bound to a Good Person Card System, he ran into the Heavenly Principles from the start, along with a rotten System. But the mysterious identity granted by the System’s rewards was a little too out
243Reads8.6Score—Shelves
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93
Pokemon: SANS’s Adventure 精灵宝可梦之SANS的冒险
Slaughter, slaughter, and still more slaughter. Sans had long since grown numb to his anger at “humans” slaughtering his brothers and kin. Just as he thought he was about to be killed like all the times before, Gaster transported him to a strange world: a world filled with creatures called Pokemon. Now, Gaster and I are going to write a legend! Okay, this is so damn chuuni. Hope you enjoy reading.
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94
Undertale! Why Is There a Creeper Here? 传说之下！为啥这里有只苦力怕？
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...
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95
I'm Invincible, Yet I Set Limits on Myself 无敌的我，给自己设限
[Invincible + Roleplay + Multiple Worlds + Cheat Powers + One Heroine with a Slow-Burn Romance + Sans + Qiu Yuan] [I'm Really Not the Hound of an Evil God] [Tales of the Sword of the Wanderer] Invincible from the moment I transmigrated, I set off on a journey of exploration starting in the third world. Evil God World: Become Sans and judge the evil gods. Resurrect the dead and make up for past regrets. Sword of the Wanderer World: A blind swordsman with peerless talent. Rekindle a lost love and
11Reads—Score—Shelves
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96
A Divine Journey Starting with Demon Slayer 从鬼灭开始的神之旅
A journey from human to god. With the help of the System, the protagonist Mo Tan transmigrates to various worlds. But things go awry along the way. That is a story for later. For now, the journey begins with Demon Slayer.
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97
Undertale: Final Judgment 传说之下：终末审判
A reminder, the first world is not Undertale! It's just an AU that's very similar to the original. Other fan works may also be involved, and possibly Poems of Hell?
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- 98 Murder, the One Who Carries Out the World's Will Murder，践行世界意志之人 [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
