The director's car is occupied by former idol and popular actress Miyu Aizawa! Before a short drive to the countryside, she is given a naughty toy, a vibrator, on the basement stairs of a multi-tenant building. After it is placed inside her panties, a remote switch is operated, and Aizawa crouches down on the spot. The switch is turned on even on the stairs, and her knees become shaky and her waist becomes weak, but in fact, this is her first time...