VEC-077 Friend's mother Yumi Kazama is targeted by her son's honor student friend

Yumi is relieved that her shy son Yuta has made a friend, Atsushi, an honor student, but Atsushi's real motive is to use Yumi's plump body for his own gratification. He begins to attack Yumi, who endures the humiliation for the sake of her son. Atsushi's actions gradually intensify.