"I'm having sex with my son's friend."

I Have Sex With My Stepson's Friend. Hikari Kisaki.

Raised by his grandparents, a young man has always longed for the presence of a mother. Envying his friend Yuta, he finds himself increasingly drawn to Yuta’s beautiful, stylish, and caring mother, Hikari. What starts as pure admiration slowly transforms into an overwhelming desire that he can no longer contain.