Each point is a rolling 30-day score ending on that date, sampled weekly. May differ from the window composite above.
AtHeart is a seven-member girl group formed by Titan Content, a K-pop company co-founded in late 2023 by Nikki Semin-Han, a former chief executive of SM Entertainment. The group's members were revealed in stages beginning in 2024 and include Michi, Sorin, Seohyeon, Katelyn, Aurora, Nahyun, Arin, and Bome, drawing from Korea, Japan, and the Philippines. AtHeart debuted on August 13, 2025, with the EP "Plot Twist." The group was developed as part of Titan Content's broader plan to launch multiple K-pop acts, positioning AtHeart as the company's first girl group and a test of a globally oriented debut strategy. As a fifth-generation rookie act, the group entered a crowded field of new girl groups and built its early identity around its multinational lineup and the industry pedigree of its founders.