After accidentally seeing his mother Suzuka naked, Shinya became captivated by her alluring wet skin, mature breasts, and erect nipples, overwhelmed by uncontrollable lust. Drawn to her sensual, provocative beauty, he gradually developed twisted desires, masturbating in his room using thoughts of Suzuka as his fantasy. Yet still unfulfilled, he sneaked into her bedroom late at night and chose to have intercourse with her.