My friend's wife is a lewd private tutor

After seeing his bad son, his father called the tutor center, where his wife, an acquaintance, was a private tutor. Then came Rei, who was wearing a voluptuous body and sexy outfit. Rei immediately teaches her how to study, but her big breasts are pushed into her, making her useless son even more prone to studying. Rei uses his own body to curl up his father, who is angry at the exact opposite effect... And the next target is his younger son...