Video prompt: Elegant 4K UHD video, 10s, 60fps, loopable, me...

Video prompt: Elegant 4K UHD video, 10s, 60fps, loopable, medium shot, vertical composition, Japanese calligrapher in plain black kimono (empty hands, no brush/ink) standing by a paper window. Background: A scroll hanging on the wall swaying slightly, a small bonsai tree on the windowsill, wind blowing the window paper gently. Dynamic design: No character action, character stands still gazing outside; background movement (scroll swaying, window paper fluttering) creates serenity. Lighting: Soft natural daylight, cool neutral tones, no text, no watermark. Style: Minimalist, traditional aesthetic. --ar 9:16 (Vertical, 1080x1920, YouTube Shorts Standard)