(masterpiece, best quality), highly detailed background, perfect lighting, best quality, (anime coloring:1.2), shiginomutsumi, solo, looking at viewer, smile, closed mouth, grey hair, low twintails, short twintails, blunt bangs, short hair, red eyes, flat chest, collared shirt, white shirt, long sleeves, green bowtie, green skirt, plaid skirt, seiou_gakuen_school_uniform, classroom, window
