BTOB-BLUE
BtoB Blue is the first official sub-unit of South Korean boy band BtoB formed under Cube Entertainment in 2016. The sub-group consists of the group's vocal line Eunkwang, Changsub, Hyunsik and Sungjae. The sub-unit debuted with their digital single titled "Stand By Me" on September 19, 2016.
Btob Blue People (First 2 people) - Page 0
Yook Sungjae
South Korean singer
