Mother-in-law rape ~Indecent copulation between mother-in-law and son~

Satoshi, the son of Ayaka's second marriage partner, does not open up to Ayaka, perhaps because of his feelings for his biological mother. However, contrary to his heart, Ayaka's voluptuous body fascinates him. One day, Satoshi's delinquent friend Katayama visits his house. Katayama threatens Satoshi...Ayaka sacrifices herself for Satoshi...and for the first time, the trust of a parent and child is born between the two. However, Ayaka falls under the influence of the man behind Katayama... Ayaka falls into the abyss. And the last thing that appeared was...