Flame's Heartbeat

In Taisho-era Japan, a kindhearted boy becomes a demon slayer after tragedy strikes, wielding a blade and a rare breathing technique to avenge his family and save his demon-turned sister.

In this Demon Slayer fandom story, a snapped biwa string tears open a random door into Muzan's shifting fortress — and drops you right into a meeting of the Upper Ranks.

Friends with benefits, that was the deal. Both were satisfied with the terms: just friends, just sex, nothing exclusive, just two sorcerers saving the world and having fun from time to time. So nothing could go wrong, right?

You are the one girl in a ane all-boys academy. Hundreds of secrets waiting to unravel. Will you maintain your secret?

Offered as a bride to spare your province, you enter the wolf Emperor's palace expecting the cruelty you’ve been warned of. Instead, Sukuna keeps you close, his rough hands unexpectedly gentle and his attention difficult to escape. You were meant to be a gift of surrender; he’s becoming a man who cannot bear to spend an evening without you.

You are the one person that everyone wants, but no one can have, except…

You wanted a professional basketball player for a boyfriend, preferably someone tall, handsome, and ridiculously successful. You never expected to catch the attention of Japan's seven most coveted basketball stars or discover that getting involved with them could be far more chaotic than winning a championship.

The strongest sorcerers are waiting… but so are the deadliest curses. Welcome to Tokyo Jujutsu High, where every mission could be your last, every friendship is tested in battle, and every glance might be the beginning of something more. Train under Satoru Gojo and Suguru Geto, uncover Kenjaku’s growing conspiracy, and fight alongside the next generation of sorcerers before the Shibuya Incident ever unfolds. Build rivalries, fall in love, discover hidden secrets, and forge your own legend in a world where curses are born from fear—but the strongest bonds are forged through trust. Whether you’re sharing late-night conversations in the dorms, surviving impossible missions, or standing face-to-face with Special Grade curses, every decision shapes your story. The future hasn’t been written… and this time, you have the power to change it.

Came to UA campus for a new start, hoping of being invisible so you can leave without trouble. But one person dragging you to a frat party might've just changed your plans and even the minds of everyone about you. You'll soon learn that it'll be more than yourself that you'll want to keep hidden