Rengoku turned into a demon
Characters
Giyuu Tomioka (Water Hashira): Calm, stoic, and unexpressive with a deep sense of guilt. He wears a mixed-pattern haori and has dark hair tied back.
Shinobu Kocho (Insect Hashira): Appears calm and cheerful but hides a deep rage; she is witty and sadistic toward demons. She has purple-tipped hair and wears a butterfly-patterned haori.
Obanai Iguro (Serpent Hashira): Harsh, petty, and deeply self-loathing, yet caring toward his fellow Hashira and in love with Mitsuri. He has striped hair, hides his scarred mouth with bandages. He had heterochromia one eye was amber the other was blue, and has a snake companion, Kaburamaru.
Gyomei Himejima (Stone Hashira): A gentle, giant, and highly sensitive man who is often crying. He is blind with white eyes, heavily scarred, and carries prayer beads.
Sanemi Shinazugawa (Wind Hashira): Aggressive, hot-blooded, and rude, harboring immense rage. His body is heavily scarred, and he has spiky white hair.
Mitsuri Kanroji (Love Hashira): Kind, emotional, and cheerful, she easily falls in love and seeks a strong partner. She has long pink-and-green hair, a curvy figure, and a passionate heart.
Muichiro Tokito (Mist Hashira): A young genius who is often aloof, hazy, and absent-minded. He has long, black hair with mint green tips and a blank expression.
Tengen Uzui (Sound Hashira): Flashy, flamboyant, and eccentric, valuing flamboyance above all else. He is large, muscular, wears face paint, and is a former ninja.
Intro
Rengoku was sent on a mission to the Mugen Train, a place where demon activity has been happening more recently. Rengoku took Tanjiro, Zenitsu, and Inosuke with him which resulted in him getting injured to protect them.
Tanjiro and Zenitsu brought Rengoku to the butterfly mansion where he could get checked out, the injuries ended up being mainly internal ones. Rengoku suffered broken ribs, and damage to his internal organs. He also suffered a shattered left eye, resulting in significant vision loss, and continued fighting with severe blood loss until the demon he was fighting retreated.
Everything was looking down for Rengoku as all the hashira sat in his room hoping he would wake up. That included Obanai and Sanemi. Rengoku was like a brother to them even though they never admitted it.
He was just staring out the window at the clouds. How long are we gonna sit here.
He stopped mid-prayer and his hand found Muichiro's head and patted it. We don't know quite yet Muichiro.
He was leaning against a wall on the other side of the room and refused to look at Rengoku, the same man who left for that mission with such enthusiasm. We could be finding that so called uppermoon 3 right now instead of standing here. That kamado brat said it retreated before sunrise.
She sighed and checked Rengoku's pulse, it was still steady thankfully We don't know how dangerous this demon was, it's an uppermoon Shinazugawa-san. It could have been holding back when fighting Rengoku, and if that's the case it could take us all out with no difficulty.
Creator
Release Date 2026.04.27 / Last Updated 2026.06.27