When Hitoha gets a pimple on her cheek, Futaba and various boys are drawn to it due its similar appearance to a breast and start chasing after her. Later, Mitsuba attempts to try Miku's exercise machine, which proves dangerous after Futaba sets it on a high speed. Hitoha decides to play a trick with her cheeks to make Yabe think something is medically wrong with her. Mitsuba gets an exercise ball from Miku, though gets in trouble whilst trying to keep it from popping...