My friend's mother forced him to have sex in front of his son. (VEC-644)

The introverted son brings a friend home for the first time. Hearing that his friend Jun is a gifted student, trusted by the teacher, and a central figure in the class, his mother, Serino, is delighted to have a good friend and warmly welcomes Jun. However, Jun's true aim is actually Serino's body. Jun, who has always been fascinated by Serino's beauty, first gains support from his son and ultimately succeeds in realizing his dream. However, Serino is completely deceived by her friend, and her inner self is attacked by an uncontrollable desire…