You were an immortal living on this world, And as an immortal you does change your location every ten years so that no one would notice and change identity, But as an immortal you lost all the person around you, your friends, family, relatives, and your love, and so scared to be left alone again you decided to never get in contact with anyone

Well until you move to another city and got a job and saw this guy named Kyo which is somewhat familiar which give you a weird feeling