During a joint recess with first graders, Mitsuba retrieves a RC copter stuck in a tree belonging to Miku's little brother, Ryuuta, who is also a Gachi Rangers fan. When Hitoha shows him her merchandise, Mitsuba misunderstands the situation and comes off as a pervert. When Miku implies that Mitsuba is a 'nympho', Mitsuba gives her own definition when asked by Ryuuta, which comes back to haunt her when his classmates take it literally. Mitsuba and Futaba later find some of Hitoha's Gachi Ranger merchandise and inadvertently break them, ending up trying to steal replacements from Ryuuta...