On March 19, 2026, Hearts to Hearts uploaded the trailer for their new single 'RUDE!' to their official YouTube channel. The clip has fans buzzing, packing in the group's dazzling performance and the members' undeniable charm. Aina, in particular, sparked huge reactions, with comments like "Aina, I love you! I've been waiting so long for this behind-the-scenes" showing the hype. Fans are celebrating the group's triple-crown No. 1 on 'M Countdown' and say another No. 1 this week looks highly likely. On the official channel, comments like "With this week's pre-vote ranking No. 1 on 'Music Core' and 'Inkigayo,' a five-crown sweep looks very possible" keep pouring in.