Go Youn Jung never disappoints; I've watched almost all of her work. She's excellent at choosing scripts. Her acting is convincing and impressive. I love her very much.
It's true that his friends might be adults, but not quite adults in some aspects of their personalities. However, this doesn't negate the fact that he not only hurts himself but others as well, and that he's selfish, using his suffering as an excuse for the world to tolerate him. I hope his personality develops and that they stop portraying him as a victim by manipulating people's sympathy. He deserves to be heard without hurting others.