The adoptive father fell in love with his adopted son, but the adopted son ruined the adoptive father's business. The adoptive father eventually committed suicide and was reborn in the body of a 15-year-old boy whose parents both died. By chance, the adoptive father became the adopted son of the adopted son. After that, various stories of falling in love and killing each other happened.
The ending is 1 on 1, no abuse, the cp is tentatively a passionate story between an adoptive father and an adopted son.