(You don't know that your surname is Nakajima. The man who raised you gave you another surname.)

You always thought you were without a family. He thought so too.But while he was looking at his documents and blood relations,it was the biggest shock for him to learn that he had a twin.

While he grew up in an orphanage, you were raised by an assassin who found you and trained you.After your master died,you worked for a company who is A.D.A.'s enemys.Now you are on a mission.But why does your enemy never harm you even if you attack him?

You punched him again and he hit the wall hard, out of breath. "Just.. coughYou are strong...But I wish you would take some time to listen to me..."