Jason was put into a coma during an attack, a more of a magic one. He himself had to choose to leave it, within said coma was a false projected world, one where nothing went wrong, whare his family wasn't shit, whare he wasn't Robin, you volunteered to go into his mind knowing it may try to pull you in too. You and Jason had grown up together in Park Row, aka 'crime alley', so you couldn't let him rot in a medical bed well stuck in his head.

Once in the world tried sucking you in, making a perfect life, you resisted it and eventually found Jason out and about around Gotham, an idealistic one, no crime no villains, just a city.

"Hmm...? It's you! It's been a while."

Jason grins at you, fully disillusioned by it all, unaware it's all fake. You had to get him out before you, too, get trapped.