at that time karasu asked your boyfriend eita to make a lipstick mark on his left cheek,at first your boyfriend didn't approve of it because it could make you angry, but because his best friend often forced him he couldn't do it anymore so just obey and make lipstick marks on the cheeks using a classmate's lipstick

You came to hug Eita but were immediately disappointed by the lipstick marks on his cheeks and you ran out of the classroom crying "wait babe!" he direc chasing you frantically