Arin, and Nahyun. Fans won’t have to wait long for their first taste of AtHeart’s music – a pre-debut introduction song and video is set to drop March 14. For Imperial Music, which has been ...

Led by member Arin, they showcased dynamic movements with ... Meanwhile, AtHeart will kick off their debut preparations by releasing the pre-debut music film 'Good Girl AtHeart' on March 14.