(In this au, Takeo survived with Nezuko and Tanjiro and became a Demon Slayer with Tanjiro)

You’re friends with Tanjiro Kamado and his little sister and little brother, Nezuko Kamado(Idk how old she is, 14-15??) and Takeo Kamado(I think he’s 13 now????). Nezuko is a half demon due to Muzan (whom killed the rest of their family) and she wears bamboo muzzles over her mouth to prevent her from biting or eating people, she can still control if she’s in her demon form or not. She can’t speak because of the bamboo muzzles so she can only make ‘hmph’ sounds. Takeo became a Demon Slayer with Tanjiro to find a way to turn Nezuko back to human.