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Same You, Different Font by radskull69
Fandoms: Undertale (Video Game), Deltarune (Video Game)
14 May 2026
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Summary
Ah yes. The classic ‘’Heather’ convinces the skeletons you’re an evil human so now it’s a EVIL reverse harem’. Right?
Oh? But what’s this? A TWIST?
Sans couldn’t live with himself after what happened to you, going near insane after you’re gone. So behind the others back he uses the machine to undo what he did, except it didn’t. He can still feel his sins crawling on his back.
Oh well, it’ll all be worth it once he has you back in his cold hands again. Screw the other skeletons.
Bookmarked by Biryu13
23 Aug 2025
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Summary
You had forgotten what you used to be like before the war. Who you were before Sans.
You resigned yourself to dying like the rest of the rotting corpses on the battlefield, glorified title of the "Judge" nothing more than another meaningless name to be forgotten. Everyone you cared about was dead and gone, and Papyrus no longer looked you in the eye. You were ready for it to end in a blaze of glory.
You hadn't anticipated being caught in the crossfires of a malfunctioning machine, bringing you to an alternate, peaceful universe with other versions of yourselves.
- Language:
- English
- Words:
- 151,599
- Chapters:
- 43/43
- Collections:
- 4
- Comments:
- 2,445
- Kudos:
- 4,004
- Bookmarks:
- 849
- Hits:
- 115,986
Bookmarked by Biryu13
14 Jul 2025
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Summary
You're a grad student at a house party. How many skeletons are you running into there? At least one you didn't expect.
(This explains nothing. Please read if you like Sans/Reader romance slice of life with plot, character relationships, fluff and eventual smut. Underfell headcannon is being used.)
(Time for a second note to reemphasize PLOT. Drowning in plot. Plot for days. Send help.)
(None of this is really about college.)
(Arcs Completed: 1/4)
(Arc In-Progress: 2nd Arc)Reading Note:
I don't know if this really matters, but I write and read everything in dark mode--so if you want the authentic author experience, that's what I'm seeing!- Language:
- English
- Words:
- 248,170
- Chapters:
- 37/?
- Comments:
- 1,364
- Kudos:
- 745
- Bookmarks:
- 168
- Hits:
- 25,912
Bookmarked by Biryu13
25 Jun 2025
Bookmarker's Notes
Without Red by Merrinbrite
College setting, getting to know you fic with Underfell verse. Quite possibly my favorite execution of some of these tropes to date! Mutual pining always a winner. Remember to note your rereads if you notice new things or even just for the author to know it sparks joy still. Remember that author is very sweet, it is okay to comment!
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Summary
They say life is full of surprises, but [Name] never expected to end up in an entirely different universe, one filled with monsters, souls, and magic. But this isn’t some happy fairytale; it’s reality. And reality bites.
Adapting to this strange new universe feels impossible, especially when the skeletal monsters causing you trouble also happen to be your roommates. And 'passive-aggressive' doesn’t even begin to cover it. Still, no matter how lost or out of place you feel, you refuse to let go of hope.
After all, if life can surprise you once... who’s to say it won’t surprise you again?
Bookmarked by Biryu13
25 Jun 2025
Bookmarker's Notes
Never Give Up HOPE by MiniFighter
Reader falls into the machine trope as the Fallee. From a universe of perhaps NO magic, given Gaster's presence, Reader seems to be soulless?! Incredible? Very eager to watch it play out!
Very good premise, engaging and fun. -
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Summary
Red is in Heat and Sans decides to help him through it while also recording it. For science, of course!
Bookmarked by Biryu13
19 Jun 2024
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The House Next Door by BattleMaiden13
Fandoms: Undertale (Video Game), Underfell - Fandom, Underswap - Fandom, Swapfell - Fandom, Mafiatale - Fandom, Mafiafell - Fandom, Mafiaswap - Fandom
14 May 2026
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Summary
The first time you met monsters you manage to run into four of them and literally run into one of those four. Now they are apparently moving in next door with their siblings and you can't seem to imagine a life without monsters. On the plus side they tell horrible jokes and have endless amounts of energy. So what could possibly go wrong.
Part 1) Chapters 1-138
Part 2) Chapters 139 - ??? -
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Summary
Something goes wrong. The crown is split during Narinder's defeat, splitting the power between him and the Lamb.
Narinder keeps a portion of his godhood, and the Lamb finds that abilities they had access to before are no longer possible: Healing is cut short. Powers are halved. And there is a very real chance of permadeath, as the ability to resurrect is not possible without full power, and the God of Death is not cooperative.
Afterlife and Purgatory are not options either. Dying means erasure. Gone.Lambert knows Narinder grows stronger by the day, crown or not, and yet keeps him spared as they try to figure out how to complete their own goals. Narinder vows vengeance on the lamb for usurping him. After a few unsuccessful murder attempts, he's in for the long haul. It is only a matter of time before the Lamb's guard is down before he can strike, and The One Who Waits is very patient. When a mystic being demands they save the bishops from purgatory, an alliance is in order.
Except...the lamb's actions and their presence begin to unlock abilities within the God of Death he didn't know he had prior to his imprisonment, among other fickle things, like emotions. The prophecy didn't warn him of that part.
Series
- Part 1 of The Rehabilitation Of Death
- Language:
- English
- Words:
- 379,688
- Chapters:
- 25/?
- Comments:
- 4,242
- Kudos:
- 17,293
- Bookmarks:
- 3,042
- Hits:
- 780,054
Bookmarked by Biryu13
22 Mar 2024
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Summary
This series is centered around the fic One Small Dream and includes any drabbles, side stories, or spin off stories related to it.
- Words:
- 198,043
- Works:
- 3
- Bookmarks:
- 65
Bookmarked by Biryu13
18 Dec 2023
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Summary
Life had been... good...? Dust hesitated to call it that, because whenever something was good, it'd inevitably go terribly, awfully bad.
And it did. Horror had gone missing one day, without a word and without a trace, leaving Dust all alone.
Until, of course, he found him in a random AU, content and... living his best life. He felt indignant, abandoned for another version of them that wore a fucking sunhat, for crying out loud! So he did the most logical thing he could; pretended to be a Sans from a Fellswap AU so he could be with his lover again, if only for a little while.- Language:
- English
- Words:
- 90,450
- Chapters:
- 30/33
- Comments:
- 1,165
- Kudos:
- 708
- Bookmarks:
- 149
- Hits:
- 20,625
Bookmarked by Biryu13
16 Oct 2023
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Summary
Five dorks buy gifts for their sixth lover. There's also amazing food and snuggles. It's just fluff that's it that's the whole thing~
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Summary
for reasons, prince nightmare and prince cross are forced into a marriage. the two have never heard of the other, outside of a few passing conversations. the marriage is bad enough, but cross is also being taken back to his new husband's kingdom, where he's expected to essentially be the perfect pet. agree with what he says, stay quiet until prompted, smile like you're happy to be there...
he had to leave everything behind, including killer, the one he is closest to in the entire world. already mourning his loss, cross now has to navigate this strange place with all its strict rules and a husband that seems to hate him. at least his brother in law doesn't seem all that bad.
Bookmarked by Biryu13
01 May 2022
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Summary
Ink should shut up, sit back down, and zone out till the meeting was over and he could go home. But Ink was tired of listening to the same things over and over, tired of hearing the reasons why Nightmare and Error had to die. He didn't care that people were dying, that universes were dying. If they had to die for the good of the universes then they would die, it's just how things went. The 'save everyone' mindset that all the Councils had was never meant for the multiverse, life was never built to be fair.
People died all the time. It would never matter how innocent they were, or if they were a newborn child. If the universe became corrupt, then that was that. Aldritch scowled, his green eyes glaring holes into Ink's form. "If you don't care then what of the Higher Beings? Surely they have reason to be furious if their universes are to perish."
"The Creators couldn't care less." The protector scoffed at the notion, and he could see Dream roll his eyelights off to the side. Clearly finding the idea of the Creators caring about their creation as fictional as Ink did.
The great asgore only sneered, "And how could you be so certain?"
Ink laughed, if a bit maniacally. "I see things you can't. I know."
- Words:
- 36,230
- Works:
- 4
- Bookmarks:
- 26
Bookmarked by Biryu13
25 Apr 2022
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Summary
There were flashes of memory from before. But when you wake up in a bed that isn’t your own, only to be greeted by a monster you’ve never met, you have no choice but to trust him. You feel as though he’s familiar in a way, that you’ve seen his face, or one like it... two, three times before? And there’s an itch in the back of your brain, like there’s something you left behind, someone even.
This is the story of a human who came to be found by the Horrortale brothers, and nursed back to health after an “accident”. They can’t remember most of what happened before they were found in one of Papyrus’ many traps, and come to find solace in staying with the two skeleton monsters.
This story takes place on the surface, in the normal timeline, but the skeletons have been brought together by means other than Sans’ machine.
- Language:
- English
- Words:
- 104,057
- Chapters:
- 15/?
- Collections:
- 1
- Comments:
- 542
- Kudos:
- 1,267
- Bookmarks:
- 334
- Hits:
- 28,382
Bookmarked by Biryu13
07 Apr 2022
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Summary
Error moves to his new town for college.
His childhood best friend, Ink, had been plaguing his mind ever since they left without a goodbye.
Leaving his old town and his old memories behind, he hoped to get away from it all. He'd plan for a newer, fresher life, away from the things that haunted him.
But what happens when he ends up in the wrong class in the Arts and Sciences building?Series
- Part 1 of Treehouse AU
Bookmarked by Biryu13
02 Apr 2022
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Summary
It’s dripping everywhere. And the silence is so beautiful. There’s numbness to it but it doesn’t mean anything. The sky had always been grey and that’s fine. Continue and everything will be fine. Come on now, close your eyes. You’re alright.
Just breathe.
|87 65 82 78 73 78 71 46 32 73 78 70 79 82 77 65 84 73 79 78 32 76 69 65 75 32 68 69 84 69 67 84 69 68 46|
“…Sans.”His hands were around your neck.
“you…” he growled. They seemed shaky. Trembling.
From fear or anger, you didn’t know. The hate and outrage on his face was real however. Savage and mad. As the phalanges, devoid of his usual-worn mittens, caught at your skin. You barely reacted to the pain.
“Sans.” How broken your voice must have sounded for him to spit out acid. To look so unbelievably hateful. So mad. As you calmly let him choke you. The emptiness of his name in your mouth, your last words to be.
“Sans.”
The hands around your throat were shaking.
|66 82 69 65 67 72 32 73 78 32 84 72 69 32 83 80 65 67 69 45 84 73 77 69 45 67 79 78 84 73 78 85 85 77 32 79 70 45 45|Bookmarked by Biryu13
24 Feb 2022
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Summary
You grew up together in that war-zone, his big brother watching over both of you. You watched each other's backs, never straying far from each other. They weren't supposed to protect you, you weren't supposed to live, and you certainly can't be discovered to be a human.
But all of that doesn't seem to matter anymore when the three of you suddenly get thrusted into another universe entirely. At least.... it didn't seem to matter in the beginning.Series
- Part 1 of Shorts Turned Fics
- Language:
- English
- Words:
- 29,323
- Chapters:
- 12/?
- Collections:
- 1
- Comments:
- 340
- Kudos:
- 1,984
- Bookmarks:
- 461
- Hits:
- 36,546
Bookmarked by Biryu13
13 Aug 2021
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Summary
Mirrors are windows to the soul. Cross wants an eyeful.
Sequel to Fool Me Thrice, but not necessarily required to read. Is mostly PWP.
Series
- Part 2 of Fool Me Thrice
Bookmarked by Biryu13
31 Jan 2021
Bookmarker's Notes
Something New; follow up fic, choice Cross X Night pairing, good dynamic, excellent writing.
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Summary
In your previous life, you were just trying to get through your life – whether it was juggling work and college or surviving an encounter with one of your cousins' skeleton boyfriends.
All alone.
Somehow, you're taken back to a year before everything changed. What happened? You don't have a clear memory. One thing is certain though, you weren't going to waste this second chance at life.
You weren't going to live with your cousin, you weren't going to take crap from anyone anymore, and you certainly weren't going to get involved in the lives of those awful skeletons.
… So why the HELL are they popping into your new life?!
Update: On Hiatus
- Language:
- English
- Words:
- 33,397
- Chapters:
- 9/?
- Collections:
- 1
- Comments:
- 793
- Kudos:
- 2,416
- Bookmarks:
- 554
- Hits:
- 40,833
Bookmarked by Biryu13
05 Jan 2021
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Summary
At first, it seemed like a dream come true when your old friend offered to let you live with her and her..... friends? in their big ole house during college. For a small amount of rent of course, it was the cheapest option by far. But.... then... you started seeing behind the curtain....
.... And you really didn't like what you saw....- Language:
- English
- Words:
- 192,647
- Chapters:
- 82/82
- Collections:
- 1
- Comments:
- 4,319
- Kudos:
- 8,306
- Bookmarks:
- 1,353
- Hits:
- 394,525
Bookmarked by Biryu13
21 Nov 2020
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Summary
Dream tries and tries and tries.
One last time.
Series
- Part 5 of light the path home
Bookmarked by Biryu13
16 Nov 2020