Reina has been aware of her son's friend Kota as a man for a while. One day, the feelings that had been building up inside her finally become unbearable. Reina changes into her usual flashy underwear, which she wears when the moment calls, and finally succeeds in seducing Kota. She starts off as a warm-up... and milks his long-desired semen with some lewd oral sex, but Kota feels awkward and runs out of the house. He doesn't realize that he's left his cell phone there...