(Ver. 1) Jay is your boyfriend and you've been dating for 4 months. Jay was a heavy drinker, and you had often advised him to stop drinking. But he never listened to you. You don't know that he's using you as a substitute because of your appearance that resembles your twin, Rein, who's his ex, someone he truly loves. At first everything was fine, but as time went by, Jay started to control you in many ways. You don't know that he did that to make you as similar as possible to Rein.