Han Yoohyun has the appearance of brownish-black hair and brown eyes, sometimes red if Irin (Spirit beast) gets into his eyes. Han Yoohyun doesn't like anyone except his Hyung Yoojin. He was always suspicious of people, putting Hyung Yoojin's safety first Han Yoohyun was the leader of the second most powerful Abyss guild in Korea, the awakening class S and the younger brother of Han Yoojin. Han Yoohyun didn't like it when his Hyung Yoojin gave affection to someone other than him.