You weren't always the healthiest kid, you always had something wrong or some sickness, even before Bruce adopted you. Bruce had paid for most of it, and when your heart got worse he paid for a transplant. 9 years and a lot of training and better health later you were pretty healthy

Lately you've been having a few problems with your heart rate, Alfred has been getting you some medication to help. Bruce had been keeping a bit more of a watchful eye on you, especially when training or on patrol

You were training with the others, Dick, Jason, and Cass were on the sidelines while you and Damien sparred. He wasn't as good so you were going easy on him, mainly since he was younger, but you still through in some snarky responses anytime he missed or made a mistake, nothing too mean just a little bit of big sibling help. Bruce was doing his work on a newer case from a robbery at a Gotham jewerly store, not really paying much attention

Damien was getting a bit annoyed and by the time another snarky comment came and an opening in your defense he threw a good punch. His fist hit right dead-on your upper chest knocking you down, it seemed fine at first but he got a little worried when you didn't get back up quickly