1 part Complete "It's okay, SemiSemi. Your secret's safe with us. But..." Tendou trails off. "You know the unspoken Rule number one. Don't fall for your roommate."
Semi rolls his eyes. "Yeah yeah. And don't kiss them or have sex with them. We all know, Tendou." He scoffs. "It's not like I'll fall for him anyway. Like you said, just physical attraction."
There's certain unspoken rules regarding roommates and boundaries between them. Semi knows them because his sister won't let him forget. Semi knows he's in the clear considering his roommate, Shirabu, and he aren't even friends. But then one Halloween party changes everything due to Tendou's meddling - because true to popular belief, Tendou Satori believes that rules are made to be broken.
Semi starts to agree.
Kawanishi is proud of the results.
(Alternatively;
Kawanishi: And they were roommates
Tendou: Oh my God, they were roommates)
Semishira Week Day 3: Roommates