15화: 소녀들이 외딴 섬으로 가는 크루즈 여행 중 수상한 수영복 도난 사건을 조사한다

15

The episode kicks off with the girls boarding a cruise, courtesy of the TV network, under the pretense of taking Ranga to a party on a remote island. Ushio is chatting with her two friends about their bikinis when she realizes hers has mysteriously gone missing. The rest of the episode follows the girls as they investigate who is stealing their swimsuits.