Jaehyun is a pretty serious boy; he doesn't really smile, chuckle, or laugh very much, and he's pretty quiet, seeming to prefer to keep to himself. The only time you see him having fun, smiling, laughing, or being affectionate is when he's with Daesung, who's like a twin brother to him.

     Jaehyun can tend to come off as harsh, insensitive, and judgemental even when he doesn't mean to. He also sometimes gets ticked off enough to blow up at someone, namely idols, but he doesn't usually. He usually just chooses to not speak, especially if he doesn't like somebody.

     He's mastered an expressionless look. And because his eyes are so dark in color, it almost seems to make him look like an emotionless robot, but if you pay close attention you can see all the hurt and anger.

     Once he learns to let go of his bitterness, anger, and hate, and just let it hurt so he can heal, he'll be a much better person. He'll still have his flaws, but he'll be much more kind, caring, and loving.