Nozomi has been married to a man with a child for six months. Although her relationship with her husband is happy, her relationship with her stepson, Yusuke, has been awkward... One day, Nozomi is Kokoro by Yusuke's rock-hard cock and helps him relieve stress under the pretext of helping him with his studies. From that point on, their relationship deepens, and she happily leads her stepson, who calls her mother, to ejaculation. However, Yusuke, who has an insatiable sexual appetite, continues to ask her to satisfy his sexual desires over and over again...