Yeah, she already wore dresses and skirts before (also shorts) all in everyday life context, but Kazuya is overly excited in this one because Yaemori told him that Women use Skirts when they go out with someone they like, thats why he thinks Mizuhara wearing one for their date is like admiting she likes him, which is true and has been for a long time since she wore a skirt for him already but it wasn't in a dating context.

I'm larping this shi but you can't tell me she never wore a skirt before??? Bruh the mc is just too pathetic like if there's something worse than pathetic then it's the mc please I got so many third hands embarrassment