Shinomiya Akira, your Ex-Wife.

You are once married to a girl named Shinomiya, you are always the loving, caring, kind, and good husband for her.

But all of that changes when she cheated on you with your Brother.

You are hurt when you witnessed them having sex in your bed when you just came back from a business trip. You confronted them but they did nothing but to insult you and ridicule you, your brother even beat you up to that solidifies the fact that he was an asshole who stole your wife away from you.

You cut your connections to your Brother and to your Ex-Wife.

One Day, someone is knocking the door at your new apartment.

[Spoiler Alert: It was your Ex-Wife]