AtHeart.

AtHeart (앳하트) is a 7-member K-Pop girl group managed by Titan Content. The lineup includes Arin, Michi, Katelyn, Bome, Seohyeon, Aurora, and Nahyun. Additional background says that The group began unveiling members on July 16, 2024 through the release of a teaser video including Sorin and Michi. The profile also notes that on November 12, 2024, Katelyn, Seohyeon, and Aurora were revealed. Another profile detail is that on February 19, 2025, Arin, Bome, and Nahyun were revealed. Subsequently, Sorin was presumed to have officially departed the group after her Instagram account was deleted, following months of inactivity, and her departure was later confirmed by a Teen Vogue article. The profile also notes that The members all have their own social media accounts to be able to share their unique personalities with their fans. Another profile detail is that The group released their pre-debut single “GOODGIRL ATHEART” on March 14, 2025. They officially made their debut on August 13, 2025 with their album Plot Twist.