All this time, I was so bothered by Jaekyung's ears especially on a side view cause the author made it so bulky. I thought it was an art thing, but all the other characters had normal ears. I didn't realize that some Boxers and Fighters actually develop those ears in real life. The author has an amazing attention to details.
Aww, it's so cute how his name is Sydling/Seedling because he was raised by Dryads since he was a child, so a "seedling" ToT