Members of K-pop girl crew Keyveatz, from left, Newy, Kang Ye-Seul, Um Ji-one, Son Ju-one and Kim Yu-na pose during a press event held to commemorate the team's official debut at YES24 Wanderloch Hall in Seoul's Seodaemun District, Tuesday. Courtesy of AOMG

Hip-hop and R&B label AOMG's first-ever girl crew Keyveatz made its official debut Tuesday, dropping its title track "OXY" and staking a claim in one of K-pop's last open spaces — girlish hip-hop.

The five-member group — Son Ju-one, Newy, Um Ji-one, Kim Yu-na and Kang Ye-seul — have been deliberate about the "girl crew" label, positioning themselves apart from the typical girl group mold for an identity rooted in "subculture and underground aesthetics."

Hours before the release of its debut EP "OXY_GEN," the group met press at YES24 Wanderloch Hall in Seoul, arriving in sharp streetwear but radiating first-day nerves.

"I'm incredibly nervous," said Son, the group's leader. "Standing on an official debut stage, I feel excited and anxious all at once. A lot of time and effort went into getting here ... Our slogan is 'Don't miss what's next,' so we're asking you to keep an eye out for us."