AllFor_One
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Summary
Senku has known you his whole life but for some reason you are not friends. Part-time neighbors and full-time archenemies, you are a constant in his life that is bothersome, but he is used to the routine between you two. Despite questioning himself occasionally about the nature of your relationship, it is only after the petrification that he starts to dig deeper.
In the idyllic Eden that is the stone world, you finally have the chance to connect with each other.
Series
- Part 1 of My Muse
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Summary
Before the world ended, they built a rover together.
Tomi was the kind of girl who said almost nothing and noticed everything. Senku was all logic and lollipops and talking too loud in classrooms that weren’t built to hold him. They weren’t friends, exactly. But they worked. Side by side. Wire by wire. Until time ran out.
Then came stone.
Years later, Tomi wakes up to a world made of stone and glass and half-forgotten blueprints. Senku’s still there—older, sharper, just as infuriating—and somehow the only thing that still feels familiar. They don’t talk about before. Not directly. But it bleeds in: the late nights in the lab, the tension that hummed louder than any engine, the things neither of them said out loud.
Now they're rebuilding civilization from scratch—calculations first, emotions filed somewhere under “pending.” But when survival stops being the only priority, they’re left with what they never tested: the thing between them. Too volatile to define. Too important to fail.
They called it science.
But maybe it was always something else.
[ OC X CANON ]
Series
- Part 1 of DCST OC
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Summary
Omegaverse
What if the six months Senku spent alone didn't give the nerd a ripped body and the characters didn't have plot armor to protect them from mental trauma? He was alone and on the edge of starving for so long...
What if the persistent and commanding scientist everyone was sure was an alpha was an omega instead?
What if Senku made a deal with Gen to use their biology so they wouldn't miss having suppressants? It's just a deal struck because their lives depend on keeping their heads on straight until the war is over. It's all fake, right?
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The Guard Puppy of Babyls: Prelude by sasan00
Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Anime)
26 Dec 2025
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Summary
Kalego hated troublesome things. That's why, when he's somehow summoned by two human buffoons to sell their son in exchange for money, he decided he would simply get rid of them. Yes, this decision did not at all change when said son walked in, horrified as his supposed parents eagerly tried to pawn him off. He was going to crush them all, find a way back to the Demon World on his own and—
"You said you wanted money, correct?" Curses.
A story in which, Kalego obtains a puppy.
Series
- Part 1 of Guard Puppy
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Half Demon by DekuNo
Fandoms: 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga), 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Anime)
24 Jan 2026
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Summary
“I’m pregnant.”
The words were like a spear through the chest. “What?”
“I’m carrying a demon child.”
Kalego sat up, head spinning. “That shouldn’t be possible.” They were entirely different species after all.
“And yet, it is.”
Or: Iruma’s mom summoned Kalego as her familiar first and Iruma is Kalego’s son—a half-human, half-demon cambion. 15 years later and Kalego never thought he’d get the chance to meet him until a certain blue haired boy gave a speech at the Babyls opening ceremony.
Series
- Part 1 of Half Demon