it's called cauliflower ears! it happens to boxers because of the extreme trauma that happens to the area from well.. boxing haha They look like that cause they swell up w/ blood
A lot of fighters have cauliflower ears which is from the physical trauma that damages the cartilage. Idk if they just got worse or something but they did stand out more than usual this chapter
Is it only me or jaekyung's ears r weird....did I miss something abt it in the story...cause frankly his pinna or external ear looks swelled up