Having neither a girlfriend nor any money, Kenta spent his days masturbating like a monkey, repeatedly using his right hand. "I should just cum one more time..." he thought, when his mother, Shika, came in to clean. Her defenseless cleavage and a glimpse of her panties. In the midst of extreme sexual frustration, Kenta's eyes were drawn to his mother as she cleaned. "Mom is so sexy..." A forbidden desire began to sprout within Kenta.