While Lucid and the panel skipped covering this for the fanservice episode, it had plenty of it along with lots of fighting. There’s not much else to it though.

Episode 53

Recorded and Broadcast on November 11th, 2007.
Lucid, Yomiko, Gabe, Zahooee and Jaxson.

Running Time: 1:58:38 Summary At Daimon High School, kids settle their disputes by dueling with each other in the school’s official K-Fight battle arena. Ryoko Mitsurugi, samurai girl and undefeated K-Fight champion, is called upon by a mysterious Priestess to protect the Earth from an invasion coming from the alternate universe of Solvania. She must face battles that will test her skills, her friendships, and her heart in order to find her true strength as a samurai warrior.

Source: Anime News Network Notes – Notes 1 here
– Note 2 here