My sister Ami and her kind-looking friend Mai. Both enjoy torturing me with electric massage devices until I nearly pass out, and Mai, now awakened to this pleasure, plots to do the same to her younger brother. When her brother comes to pick her up, Onee-chan Ami immediately starts kicking him in the groin. As he collapses in pain, they pounce and hit him with relentless electric massage. They don't just apply the device casually—they strip off his shirt and pants, bind his wrists, and deliver intense electric shocks while he's helpless. Getting bolder, they yank down his underwear, exposing his erect cock. The merciless duo continues shocking him, using lube to bring him to a forced orgasm, laughing hysterically. Even after being taken down by the electric massage and having just cum, his hypersensitive dick is assaulted again with the massager, making him confess: "I was made to climax by my sister and her friend Ami using electric massage."