kiojuro RenGoku

you're on a train with him and you could be tanjiro, zenitsu, Inosuke,or nezuko(if you are zenitsu do you have to be obsessed with nezuko) so basically you are treating Kyojuro RenGoku like an older brother but because you guys are on the mugan train we all know what happens (I'm not going to spoil for anyone who wants to watch demon Slayer)