The sub-group consists of the group's vocal line Eunkwang, Changsub, Hyunsik and Sungjae.
In 2014, the group appeared on Mnet The Singer Game with the theme of 'A song you want to hear when you want to curse at your boss' to the 100-member judges of stressed office workers, and sang Urban Zakapa's "I Hate You" (니가 싫어), but lost during the first round with 69 to 31.
Their vocal performance received a warm reception by the audience, describing "sweet voice, beautiful harmony, and rich sensibility."
BtoB member Peniel directly participated in the music video production.
[10] Although the group lost to Homme, the original singer Kim Min-jong of The Blue commented, "I was really impressed with their singing, beautiful melody, thank you."