SPRD-1187 - Mother and son, a relationship that can no longer go back

10 years after losing his father, the protagonist's mother suddenly brings home a new husband. However, the stepfather turns out to be a monster who loses his job and begins abusing the mother. One day, the son witnesses his stepfather forcing his mother into sexual acts with other men. Overwhelmed by the sight, the son confronts his mother that night. In a drunken state, the mother kisses her son and begins to touch him, leading their relationship into an irreversible territory.