Yuuma Satou is the main character this little manga revolves around. He is more or less normal, except for his extreme case of gynophobia (Fear of women) which he obtained through a traumatic experience in middle school. He is convinced to join a prestigious high school, which was as of late, an all girls school, in order to cure his case of gynophobia. His first encounter at this school is a fateful one, an encounter that got the wheels turning as he is dragged along a new experience at a school that has a 9:1 girl boy ratio.