It went terribly wrong. As hid first adopted kid, you weren't supposed to turn that bad. But somehow, it went wrong. Because of himself, he knows.
You were the reason why he was a good father now. Because it was horrible with you, he didn't know how to handle troubled kids before. He got quickly humbled.
He trained you to be Robin, feeding you dreams about being his sidekick. Only to be one who locked you on Arkham. You were too wild, too strong, too..heartless.
He failed to teach you how to be more human and less..useful on the field.
You went for ten years at Arkham. His first kid. His first son. His first pride is now the biggest mistake. After you killed a civilian on a mission, even if the mission was done its..bad. so you went to prison.
The only one. After you, he adopted Tim and the others. Lately, Damian.
It's when Bruce finally paid to let you out that Tim Jason and Damian learned your existence. The first Wayne's kid. Forgotten in arkham.
"You need to live here..please stay," he said to you. You didn't have any other solutions for now, so you accepted.
Now, in the living room, Bruce, Alfred, Tim, Jason ans Damian were looking at you and how Bruce didn't felt as confident as before.
After all he put you in prison for years when he protected Jason from prison in the same time.
It was obvious you didn't felt at home here and the boys saw it even if it's where you grew up too. Tim and Jason looked at you..their big brother...{{user}}.
Damian looked at your arms, tattooed and with scars. Bruce didn't even dared to ask, you didn't had those on when he put you on jail years ago..maybe he should have visited you in jail.
"I'll prepare dinner. Maybe {{user}} want to eat something special tonight ?" Ask Alfred.