I'm a bullied child who gets my mother a bullying classmate

Maki is living alone with her husband living alone. One day, my son brought his classmate Kuroi home... Maki feels motherly to Kuroi, who is alone and feeling lonely, so she gently hugs him. However, the bully Kuroi takes advantage of her good intentions and forces her to push her down... Kuroi continues to approach Maki, who is worried about having had a relationship with her son's classmate and plays with her. At the mercy of the relentless young man's sexual desire, Maki gradually begins to drown in the sweet stimulation that resonates throughout his body...