KSBJ-440 A lustful mother, Mai Fuyuki, tries to seduce her son who doesn't want her to become independent.

My only son came home from school with a dejected look on his face. When I asked him what was wrong, he said his classmates had teased him about still sleeping with his mother. The mother grew anxious as her son began to have doubts. If things continued like this, her beloved son would leave her. And what action did the mother take...? A deranged, lustful mother who resorts to forbidden acts using her own body in order to have her beloved son all to herself!