Akane Nanao, who quitted swimming because of her big breasts, she fell in love with Shouya, who is practicing baseball everyday although he's just a benchwarmer in his club. His spirit ignited Akane's. They started their relationship not too long after she joined the club, however love relations between club members is forbidden! They decided to keep their relationship secret, at least in front of club members. However they got caught by the club's coach. Later the coach gives Akane a sexual guidance to release her bursting libido. The coach threatened Akane if she reported him to other teachers by leaking their relationship and stripping Shouya's position from the club. Akane, who doesn't want Shouya's three years effort to go waste, has no choice but to obey his every word...