On the 7th, Bang Si-Hyuk posted a self-portrait with Zico on his personal SNS, saying, "I congratulate Boynext Door's debut." In the photo, Bang Si-Hyuk and Zico are holding the album of Boynext Door, which was debuted on the 30th of last month. The two people gave a warm atmosphere to the global K-pop fans with a bright smile in the office. Boynext Door is a six-member boy group introduced by KOZ Entertainment, headed by Hybrid bicycle and Zico, which means that they will express their everyday stories that their peers will sympathize with in candid Music. In particular, Boynext Door set the record for the first time in the debut team this year and ranked fifth in the debut album of the previous K pop boy group.