Ep. 11: Panic on the Shore!

11

Kousaku and Hibari's class visit the beach, where Hibari faces rivalry with Kaori over a swimsuit. After a changing room incident, Hibari borrows Tsubame's bikini, which Kaori's delinquents attempt to steal using a shark costume. A real shark appears, prompting Seiji to throw his loincloth to Hibari for modesty while he confronts the threat. Hibari defeats the shark, saving Kaori's group. Seiji performs a naked victory dance, shocking the onlookers. It is later revealed that Ibari wore the shark costume to protect Hibari, with a harpoon lodged in his buttock.