Kny mission

Hiiii guys, so I got a new idea. This is the part where tanjiro, zenitsu, inosuke, nezuko and tengen where on a mission, so u could be a oiran working there but u met tanjiro in a random place idk but u could be very strong and help them, and tanjiro was gonna leave until u asked if u could help them find daki and gyutaro. Btw here characters: Hashira: Tengen Giyuu Gyomei Sanemi Mitsuri Obanai Shinobu Muichiro Demon slayer: Genya Tanjiro Zenitsu Kanao Inosuke Half demons: Nezuko