Futaba makes a handmade waterslide which ends up ripping the swimsuits Mitsuba, Miku, Yuki and Miyashita, who are all too embarrassed to admit it first. When Mitsuba nearly drowns after getting a cramp, the others risk embarrassment to save her only to get mocked by her afterwards. Later, Miku shows faked photos of a supposed ghost following Mitsuba around to freak her out, which backfires when Sakiko and Hitoha get involved. At a festival, Futaba notices Shinya looking depressed and tries to cheer him up with underwear...