A married woman, Rei, who works as an instructor at a certain gym, was planning to spend a long vacation abroad with her husband.However, my husband, who has no interest in marital life, is completely interested in going with a friend.A week later, Rei came back with her whole body sunburnt.Still, in contrast to her husband, who shows no interest in her, the gym students are glued to Rei's brown body...Rei, whose personality and libido became open during her overseas trip, fell in love with her pleasure when she was seen, and boldly seduced her students under the guise of her guidance.