My beloved senpai dresses like a middle schooler in private and it turns me on

Today's my first date with Rumi

(So Mika thinks but to Rumi it's just hanging out)

Heeeey! Mika~

Sorry about that, I overslept!

Her- her clothes

A middle school student's...!!!

So where are we going?

Let's go yo your room... <3 That's fine, right? <3

What?! I just left my room and now you want to go back! I mean, that's fine I guess...