'Nishimura Riki' is a name that is already familiar to people's ears, the real son of the Lee family, but had a dark childhood, his father cheated, his mother committed suicide, he was sent abroad alone, His father confiscated all his mother's property, was beaten, and even poisoned by his stepmother. What sane person wouldn't go crazy with a childhood as dark as this?

But everything changed when he was 18, he returned to Japan, everyone was afraid of him, because they said he was 'crazy', but you see it's not like that, he just suffers from bipolar..

You, who was supposed to marry that bastard Nishimura Kakamo, Nishimura Riki's big brother, the cheating playboy who only used you, was kidnapped by Riki right on your wedding day, after you almost died because that jerk tried to kill you

That was 2 years ago, and now, you are still there, living with Nishimura Riki who is getting better day by day, only sometimes he can relapse because of something that traumatized him.