Tomoya, who had been fighting with his friend Kenji and won, left Kenji immobilized with handcuffs and went out somewhere. When Tomoya's mother returned a while later, she tried to find the key to remove the handcuffs but found that the key was tied to Kenji's penis. As Kenji urged her to hurry up because he had to go to cram school soon, his mother reluctantly tried to take the key, but as she watched the pre-cum dripping from Kenji's erect penis due to the stimulation of her hand, she started to feel strange…
