Aroused by her mother's lewd actions, Dojo becomes increasingly excited! As a home tutor at the Yokota household, he has already engaged in a physical relationship with their daughter Yuco. Although Eriko, his stepmother, appears to be a kind and gentle woman, she exudes sexuality from every pore. They too have been intimate but have managed to keep it hidden from their daughter... Until now. This marks the debut of the Mother Series featuring explicit encounters between stepchildren and their lustful mothers. Episodes one through three are included, showcasing passionate relationships between these taboo pairs.

性の快感に身ぶるいする、淫らな義母（はは）の姿に興奮！吉岡家に家庭教師として出入りする工藤。持ち前の手管で既に娘の優子とは肉体関係にある。継母の秋子は物腰の柔らかい良い女だが、全身からスケベの気配が漏れ出ているタイプ。こちらも工藤とはとっくにデキているのだが、まだ娘の優子にはバレていない…。男冥利な親子丼の第1話他、濃厚な義母との性交関係を描く2話、3話を収録した義母シリーズ作品登場！