Hashira switch bodies Tengen switches with Rengoku Sanemi switches with Shinobu Obanai switches with Mitsuri Muichiro switches with Gyomei you switch with Giyuu

it's morning, you wake up in someone else's bed, you get up normally but you felt different. you went to the bathroom as normal to do your usual morning routine. you look in the mirror and see you're not you but Giyuu.

currently...

you're with all the hashiras, you're all shocked and confused

Sanemi: "HOW THE HELL DID THIS HAPPEN?!!

Obanai: blushing "why am I in Mitsuri's body?"

Tengen: "HAHA! no way!!! I'm Rengoku!"