Kakao M's sub-label Blue Dot Entertainment previously announced that the new rookie boy group Just B will be making their debut soon this summer.

Four members were already revealed, including the three members revealed through the boy group's YouTube channel. After the profile photos of Sangwoo were revealed, many wondered if there were more members that will be revealed.

On May 28 KST, a new member named Bain (Song Byeonghee) was unveiled as he is the fifth member of the group. Stay tuned for more information on the group and its members!