The protagonist, Ichisa Hideyo, was engaged to a woman he loved but was rejected when she revealed that she was only interested in women. This event caused him to become difficult to deal with and he struggled to get along with other teachers and students. He is then appointed as the only male teacher at a prestigious girls' school, where he meets four female students who are afraid of men and seem to have feelings for women. He begins teaching them about men using an aphrodisiac aroma he obtained by chance.