The episode where Ryoma Echizen wears a skirt?

From Official Match DVD8 "Umihara Festival! (Ryoma Echizen & Ginichiro Sanada)

Ryoma and Momojo go to Rikkyo University for the Umihara Festival, and the members of the Rikkyo University Tennis Department put on a comedy called "Cindrella and Her Delightful Companions", with Akiya Keshihara as Cindrella, and Sanada as the Prince, and the first half of the show is over, but Keshihara's skirt is torn, and she has Gakaru alter it so that the model gets smaller, and then Yukimura says he's got an idea, and he goes to ask Echizen to After a conversation, Ryoma agreed, and finally married on stage, Sanada said next to kiss, Ryoma was shocked, and ran away from the stage, and in the end, Yukimura thanked the Ao Gakkai also gave the Ao Gakkai a picture of Sanada hugging Ryoma.