Ken, the nephew of an exam student who has decided to live with his mother's younger sister Mako's house in Tokyo. However, Mako, who has big breasts, always seems to be braless at her house, and her big breasts that can be clearly seen from her loungewear and her nipples that stand out are too nasty, so I can't get enough of her study. At that time when Ken's patience was finally about to exceed the limit in living together with his aunt who unconsciously set erotic terrorism ... "Hey, do you want to rub my breasts?" Beyond that position, he begins to seduce Ken...
