I think Seon Jae got the injury from saving Im Sol from the accident.
He was already injured prior to Sol's accident. That's why Sol (who still has her legs) tried to stop Seon Jae from participating in the competition because of the injury.
I LOVE THIS DRAMA ALREADY. Please spoiler for me in the replies.
So Sun Jae remembered Sol at the bridge? Did he have something to do with her accident? Was he ridden with guilt and killed himself after seeing her again all these years? PLEASE TELL ME THE WEBTOON HAS A HAPPY ENDING.
I am so excited for S2! I hope more screentime would be given to Joonyoung and Ji Won. I want them to be together. Joonyoung is taking so much time! Lol. Move, boy!