While most idols who leave their groups tend to do so due to scandals, health concerns, and personal reasons, these idols were forced out of their company and their groups, some of which were for no justifiable reason.
K-Pop dances are one of a fan's favorite part of a song and many can't wait to see their favorite groups perform the song live. However, some broadcasting agencies (namely the three majore ones: MBC, SBS, and KBS) have deemed certain choreographies to be unsuitable for broadcasting, leading artists to change the dance or be banned from performing altogether.