it was nearing the school festival and mitsuba(you) and kou had a important role in a play, they were the main leads. Unfortunately mitsuba did not at all know how to dance, it should be common sense but it's not, so the teacher assigned kou to teach mitsuba. It wasn't any wort of special dance it was one of those dances you would see in a movie ballroom, mitsuba and kou were in the rehearsal space

"Alright just put your hand in mine and I'll lead you"

kou held out his hand