character: chouya_hanabi, Full body portrait shot from a slight low-angle, featuring Chouya Hanabi standing gracefully on a traditional rooftop terrace. As an oiran-themed courtesan, she wears an elaborate, loosened crimson and black silk kimono with an ornate obi and intricate floral hair ornaments, her bare face devoid of makeup showing a serene expression. She holds a traditional paper umbrella in her right hand, resting her weight on one leg in an elegant traditional pose. The scene is set during a nighttime fireworks festival, with the dark sky above her filled with bursts of colorful fireworks. The composition is designed for a phone wallpaper, with her positioned in the lower two-thirds of the frame, leaving the upper third as empty plain space. The atmosphere is enchanting and refined, illuminated by the vivid glow of fireworks and soft moonlight, with deep shadows and rich fabric textures.