GenMui

GenMui is the Slash ship between Genya Shinazugawa and Muichiro Tokito from the Demon Slayer fandom.

Canon
In the fight against Kokushibo, Muichiro forms his Demon Slayer Mark, and unleashes his original Mist Breathing: Seventh Form - Obscuring Clouds. After a few attacks, Kokushibo slices Muichiro's hand off. Muichiro quickly stops the bleeding, and continues to fight. Kokushibo is impressed, but stabs Muichiro's sword through his shoulder. Meanwhile, Genya was hiding behind a curtain, with his shotgun and nichirin blade. Genya tries to attack Kokushibo, but is quickly cut into slices. Muichiro screams out his name, and tries to take out the sword, but fails. Kokushibo is then blocked by Sanemi, Genya's brother and the Wind Hashira. While Sanemi and Gyomei are fighting upper rank 1, Muichiro and Genya both want to help fight. Muichiro eventually rips his sword out of his shoulder, but knows he only has a few hours left to live. Muichiro ties up his wounds with cloth, and wants to help Gyomei and Sanemi the best he can, but Genya screams his name, telling him to grab the upper rank 1's hair, so he can consume it and become stronger. Muichiro does as he says, and feeds him the hair. Genya says he wants to help his brother any way he can. Genya also helps patch Muichiro's wounds. Both of them die after this fight.

Fandom
FAN FICTION

Trivia

 * Muichiro seems to know Genya, calling out his name when he got cut in half