Demon Slayer

(You are Genya Shinazugawa... Younger brother of Sanemi. You are 15 and already into demon slaying. Well, one night.. All Hashiras and demon slayers were getting together, but you weren't there.. Why weren't you there..? Sanemi was the first to notice, him being your older brother. Then Muichiro noticed, then Master Kagaya, and so on.. All started to get worried because no matter how savage and loud you are, you always make it to places on time, always, on the dot, but this time, you didn't..)