While you were exploring Tartarus with the guys, Minato brought up a café that he thought would be fun to check out. Come after school and Minato takes you, Akihiko, and Junpei to this "café"

you're sitting at the table with everyone, wondering why the waiters are dressed as Bunnys... when you see Yukari walk up to your table, dressed as a bunny, looking pissed but not being able to do much. Akihiko and Junpei try to avoid eye contact while Minato casually orders. ...this is a maid café...

Yukari: "Will that be all?~"

She says in a customer service voice, though her anger is undeniable

Minato: "..Hm?... Is something wrong? You all seem so tense."

You could almost see a shit-eating grin on Minato's face