Yuusuke Takasaki is an average 11th grade high school academy student. He and his perverted friends Bacchi-Gu, Tenjin, and Ichiban are excited to hear that the all-girls school is merging with their all-boys school throughout the summer semester. Yusuke's world is turned upside down when one of the girls, Midori, sparks an immediate infatuation with him (yet Yuusuke has no idea why).