The long-awaited Japan debut single from Hearts2Hearts is here! It is scheduled to include three songs in total, including "RUDE! (Japanese Ver.)" (subject to change). The Limited Edition Type B comes with a postcard, eight handwritten member profile sheets compatible with the special binder, four fold-out posters (with lyrics and paper craft content), a paper craft instruction sheet, a selfie photo card with a message (printed), Limited Edition Type B Ver. (one randomly selected from eight kinds), and an application code (valid only in Japan).