한 AtHeart

AtHeart (앳하트) is a South Korean Girl Group that debuted in 2025. They consist of 7 members: Arin, Aurora, Bome, Katelyn, Michi, Nahyun and Seohyeon.

Assembled through global auditions spanning Korea, Japan, the Philippines, and the United States, with the name combining "Heart" and "At" to frame its purpose around connection and sincerity with fans. The lineup was unveiled in stages rather than at once: Michi, a Hawaii-raised member with Japanese and American citizenship, was the first to be publicly introduced in mid-2024, followed by Seohyeon, Katelyn, and Aurora later that year, with Nahyun, Arin, and Bome completing the seven-member configuration in early 2025. A previously announced trainee, Sorin, was ultimately removed from the debut lineup before launch. The members' paths varied—Arin began in dance before shifting toward singing, Katelyn was inspired to pursue idol training after watching a BTS concert during the pandemic, and Michi's interest grew from extensive dance training and a BLACKPINK concert she describes as a turning point.

The group operates under a dual-structure production system, with A&R teams in both the United States and Korea collaborating on song selection and recording details, a setup the members have cited as enabling close attention to elements like pronunciation and vocal delivery. Choreography encourages the members to prioritize interpretation over precise replication of moves.