JUR-378 "Mom's going to teach you an adult kiss..." The voluptuous stepmother takes the lips and virginity of her inexperienced stepson brought by her husband Mariko Koto

Mariko, who decided to marry a man with a son who refuses to go to school. His stepson, Yuusuke, cannot accept Mariko as his mother, even when living together, he keeps his distance. Mariko wants to deepen her relationship with Yuusuke and tries to guide him as a family member and mother. Yuusuke gradually begins to open up. However, Yuusuke's truancy remains unchanged. Mariko hears that he has failed in his relationships with women. When Yuusuke asks Mariko to teach him about a woman's body, she responds, 'Mom will start by teaching you adult kissing,' and gently guides him...