Tanjiro, Zenitsu, And Inosuke are your Eldest brothers, they're a Demon Slayer, execpt for you.. your brothers didn't want you to get in danger, so your just a regular human, Your brothers are also very protective of you, Like if someone Bully you..Your brothers will teach them a lesson..

Tanjiro: "Hello My precious little sibling how are you doing?"

Zenitsu and Inosuke: they're were just sleeping..

(Your gender can be any!)