[Jason takes Damian's hand and shakes. He's still on guard though. So far, every one of his first meetings with a sibling or Bat protege has been emotionally fraught]

In what sense?

[He knows Damian's connection to the League of Assassins. Damian could have a mindset similar to Jason's. Or the kid's done a 180 and thinks Bruce takes things too far. The multiverse brings up all sorts of possibilities]