Three HYBE groups—LE SSERAFIM, ILLIT, and KATSEYE—demonstrated genuine sisterhood off stage through a YouTube video released on June 14. While promoting their collaboration single 'ICONIC BY MISTAKE,' the members participated in a DIY hoodie decoration activity where they created personalized hoodies for each group. Members accurately expressed each group's charm through specific keywords: LE SSERAFIM as 'cute team in black,' ILLIT as 'ILLIT core itself,' and KATSEYE as 'leopard, hot girl, kitschy.' During a joint dance practice session, members were seen hugging and sharing sincere praise for each other's performances, reflecting a relationship built on support rather than competition. Members such as Sophia noted 'different senses and concepts matched well,' Iroha mentioned 'creating one stage with different teams was very special,' and Daniela expressed 'we felt sisterhood while laughing and chatting together, we're just girls.' The collaboration single released on June 12 achieved impressive results, entering Spotify's Daily Top Songs Global at #29 on its first day.