They remind me of STAYC and Weeekly when they were rookies. Both groups had the same "high teen" concept. STAYC's "ASAP" and Weeekly's "After School" were the trending topics back in 2021.
KiiiKiii and Hearts2Hearts have what appears to be the same, or at least similar, concept as each other. They're also getting the same type of buzz among K-pop fans.
