In school trip to the nudist beach!!

Synopsis

A high school class is taken to the Yarimoku nudist beach by their foreign teacher, Suomi. The only rule for visitors is that erections are not permitted. To encourage bonding among her students, Suomi pairs up female students with male classmates who need sexual relief. Because of the visual stimulation from his peers, Naotatsu Nagato becomes the first and only student to break this rule. His overwhelming and insatiable desires end up causing considerable trouble for the female students in his class.