On March 23, 2026, H1-KEY uploaded the dance practice video for 'To My First Love' on their YouTube channel. In the clip, the members deliver captivating choreography in the practice room, drawing praise from fans. One comment reads, "Every release is good—this team has skills and so much charm," while another cheers, "Wow, the practice room got bigger! And H1-KEY, please keep doing even better—fighting!" A fan also wrote, "Stay healthy and keep thriving from here on!" With each comeback, H1-KEY keep revealing new charms that win over fans.