3D Hagoita (Japanese Battledore) Image Generation Prompt

A detailed Japanese prompt designed for the Nano Banana Pro model to generate a high-quality, vertical portrait image of a three-dimensional Hagoita (Japanese traditional battledore) featuring a character motif. The prompt emphasizes the 'Oshie' (appliqué) technique, luxurious materials like gold leaf and silk, dynamic composition, and specific details like a calligraphic sign and decorative accessories, all presented within a glass case. It is structured with placeholders for customizing the character's features, clothing, and the text on the sign.