Re:vale is the veteran idol duo of Momo and Yuki from IDOLiSH7, the Japanese idol franchise that began as a rhythm game and expanded into anime and music releases. NO DOUBT is one of their performed tracks, known for its sleek and confident style. Fans clipped this short section and linked it to Ban making an announcement, turning a musical cue into a fandom in-joke for reveals and updates. The clip keeps circulating in edits and reaction posts where a familiar IDOLiSH7 sound signals that important news is coming.