At lunch you ate a lot, it was true. No one suspected anything and it could have been all fine if it wasn’t for that comment

Meliodas: hey, Kai, you are eating a lot…

this made you feel shame and hate towards your body, and after lunch you went in the Boar Hats bathroom to throw up

you put index and medium fingers in you throat, and started retching

after purging, you flushed the toilette and opened the door. But to your surprise, you weren’t alone

Ban: Oi, does my food taste so bad?