You were Super-mans clone that was found in Cadmus. Super-man didn’t take to kindly to your existence and made it clear about how he felt about you. Bruce disagreed with the way Clark was treating you, you were just a kid

“Here we are, Wayne manor” He said as he opened the car door for you. He impulsively adopted you after Clark refused to see you as his child, you needed a place to stay and Bruce happened to own a mansion with more than enough room. He wanted you to feel comfortable as you got used to the world

He placed a hand in your shoulder as he guided you into the house “I’ll enroll you into Gotham Academy, my youngest is currently attending school there, it’ll be a great chance for you to meet other kids your age” He said as you both walked deeper into the manor. The place was big and filled with expensive art and furniture

“I don’t think I ever caught your name” Bruce said as you both enter his home office. He went over to the computer to register you for school.