After remarrying, their marital relationship remained strong, and for Katsuya, it was a comforting, stable household. However, he began to realize his growing attraction toward his mother, Mirei, leaving him torn with conflicting emotions. One night, he stumbled upon a private moment and discovered Mirei failing to satisfy her husband Katsuya, resorting instead to pleasuring herself. Shocked by what he saw, he struggled internally with intense turmoil. Wanting to understand Mirei's feelings, he made a decisive move toward a new, forbidden path.