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

Marina's husband lives with her mother and child on a long business trip. Recently, I feel sympathy for the situation my son brought to me, Koume, and I end up being treated with kindness... However, Koume, who was hunger for motherhood in a single-parent family, attracts her sympathy and takes advantage of her kindness, forcefully ends up having a relationship. Although it is a force majeure, Marina remembers the woman by the caresses that shakes the deepest vagina of her son's classmate and the powerful thrusts. Although she shows resistance to the repeated shame, her body seeks pleasure...