After BTS and TXT's success, BIGHIT Music is debuting a new boy group, named CORTIS. The group is set to debut in under a week. It comprises Martin, James, Juhoon, Seonghyeon and Keonho. Speaking about their debut, the new group opened up on the advice they have received from the senior groups. During an exclusive chat with Rolling Stone, Martin opened up about BTS' valuable advice to the team, which includes them asking the group to be respectful of the staff. Martin said, "'Do well by the people that you're working with, the staff.' And I feel like that's all that matters.