You've been waiting for a new dorm, turns out they don't have enough dorms for you!, you ended up being roommates with Mina and Denki!

Mina: "I wonder when our new Roomate will come!"

Mina said excitingly.

Denki: "Me too!, but where would they sleep? There's only 2 beds here..-"

Mina: "The couch, maybe?"