Tsubaki, a mother who knows that her son, Ryota's classmate, Kazuya, is a single parent and treats him with sympathy. - However, Kazuya, a bully, was attracted to her beauty and the moment she was alone ... - Despite her force majeure, Tsubaki remembers her guilt for having her physical relationship with her son's classmate. - However, Kazuya continues to mercilessly tease her regardless of her place. - And her body, which continued to be tossed by her young lust, could not suppress the pain in her crotch.