Based on the erotic game by Pin-Point.

Arata Asaoka lives with his despicable, chauvinist father and older brother. Arata is an illegitimate child so he has always been treated as such. One day he met a girl who gave him hope. Being with her made Arata feel good, and he fell in love. He began to believe that his life could be better. However, his father and brother have other plans.