Using the provided reference image as the character and design base, transform the clean Live2D model reference sheet into a polished VTuber debut announcement poster while keeping the same character design, hoodie, headphones, choker, star and constellation motifs, and overall purple-blue night palette. Change the composition from a full-body reference sheet to a dramatic upper-body key visual of the character seated at a streaming desk, one hand near the face, in a cozy nighttime bedroom-studio. Add a starry city-night window background, curtains, hanging star ornaments, glowing monitors, desk microphone, keyboard/controller, and a drink mug, with soft cinematic lighting and sparkly atmospheric effects. Preserve the branding of Yume Asta and make the layout feel like an X/Twitter thumbnail or promotional key visual. Add dense decorative typography and framed info panels in elegant Japanese idol/VTuber promo style: a large title with the Japanese name and romanized 'Yume Asta', a short poetic tagline, 4 boxed profile sections labeled 'Profile', 'Like', 'Keyword', and '配信スタイル', plus 1 smaller boxed hashtag/community section at the bottom left. Add a large glowing headline at the bottom center reading 'VTuber Debut' and 'Coming Soon', plus a ribbon-style banner beneath it with Japanese debut-stream text. Make it richly detailed, dreamy, luminous, and premium, like an official VTuber debut teaser poster.

VTuber Debut Poster from Character Sheet

This prompt turns a character reference sheet into a dramatic, text-heavy VTuber debut promotional poster for social thumbnails and announcement art.

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