Poyopoyo Oppai Summer

The summer of Japan is the summer of breasts!? This is a comical story where a boyish girl and a huge-breasted woman who is expected to be a worldwide scientist in the future! They fight over the protagonist, who happens to love big breasts above all! Worried about her breast size, the girl decides to make her bust larger so that she can protect her beloved boy from the seduction of the scientist and make him her boyfriend!