The coach of the baseball team, Tsuyoshi Higashi, gradually escalates his “guidance”.
Akane Nanao, the manager of the team, continues to offer her body to protect her beloved Shoya Katase.
However, as the coaching continues day after day, her body and sexual habits are changed into a vulgar erotic woman that the coach likes so much that she becomes aware of it.
And she responds to any perverted act