My mother left home when I was young, and I live with my father. One day, when I returned from my part-time job, my father brought in a woman and was flirting. My father's woman, AIKA, was a really chara gal with . I started to follow AIKA's ass wearing a T-back, walking around a narrow house in a defenseless appearance unique to a gal. And when my father, AIKA, and I were sleeping in the shape of a river ...