Hero Jaejoong

Kim Jae-joong (Korean: 김재중; born January 26, 1986), also known mononymously as Jaejoong in South Korea and Jejung/J-Jun (ジェジュン) in Japan, is a South Korean singer-songwriter, actor and director. He is a member of the Korean duo JX, a former member of JYJ and was one of the original members of boy band TVXQ!, where he was formerly known by the stage name Hero Jae-joong (영웅재중). source: https://en.wikipedia.org/wiki/Kim_Jae-joong