Tsubaki, a mother who learns that her son Ryota's classmate Kazuya is a single parent, sympathizes with him and treats him with compassion. - However, Kazuya, a bully, is attracted to her beauty and the moment they are alone... - Tsubaki feels guilty for having had a physical relationship with her son's classmate, even though it was due to force majeure. - However, Kazuya takes this opportunity to continue to tease her mercilessly regardless of where she is. - And, as her body continues to be played with by young sexual desire, she can no longer suppress the tingling in her crotch...