Prompt: best quality, masterpiece, highres, solo, {nakagawa_natsuki_soundeuphonium:1.15}, brown_hair, ponytail, long_hair, purple_eyes, blush, serafuku, closed_mouth, indoors, bangs, 1girl, shirt, white_shirt, short_sleeves, gym_uniform, holding, holding_instrument, instrument, blurry, blurry_background, gym_shirt
Negative prompt: {worst quality, low quality:1.40}, {zombie, sketch, interlocked fingers, comic:1.10}, {full body:1.10}, lowres, bad anatomy, bad hands, text, error, missing fingers, extra digit, fewer digits, cropped, worst quality, low quality, normal quality, jpeg artifacts, signature, watermark, username, blurry, white border, {english text, chinese text:1.05}