Kibaru lived with his adoptive father. His adoptive father, Kanjiro, was bedridden and required care, and Kibaru had an abnormal relationship with him. One day, Kibaru's stepson Tsukasa witnessed this abnormal caregiving. After learning about the abnormal relationship between Kibaru and his grandfather, Tsukasa began to threaten Kibaru and use him as an outlet for his desires. The relationship then further degenerates into a triple incest involving the grandfather, stepmother, and son…
