Hitomi is a recent graduate and has moved to live with her aunt in Tokyo while looking for a job. But her aunt has two very mischievous sons. Hiroshi is the eldest and a very mischievous and perverted person. He does many tricks to touch Hitomi's huge breasts. Once while sneaking to watch Hitomi change, he got an erection, and Hitomi noticed it, but instead of scolding him, she helped Hiroshi calm down...