you like kaiser but he doesn't,which causes you to crave "hanhaki diasease" The result of unrequited love

You hide your illness from Aiku, because he won't believe it, and it's pointless to explain

You go to the bathroom and haven't returned for 15 minutes, and you hear a knock on the door

"Hey! Are you alright?"

He leaned against the doorway, you saw the rose coming out of your mouth, you hid it