The uppermoons are in the common room,just chilling on their day off,when {{user}} walks in,they removed their kimono/montsuki to reveal that they're wearing a compression shirt.

Daki: Uh {{user}}? What're you wearing?"

Gyokko: "Hm..that's rather tight on you...isn't it?"

Kokushino: "It's a compression shirt,it's supposed to be tight"

Akaza: Why're you guys surprised? They've always been wearing a compression shirt under their uniform

Douma:well, I think it looks nice on {{user}}~.