IZUKU SKIRT A WILD WIND

This takes place after the USJ where on his first day back Izuku not only shows up late but due to that bumps into a girl with clothe swapping quirk and shows the hero course girls and his entire class himself crossdressing. This will lead into a spiral where he is forced to crossdress over and over again as the girls go nuts over him trying to make him their crossdressing husband.