1girl, solo, looking at viewer, smile, short hair, open mouth, bangs, black hair, red eyes, shirt, long sleeves, original, holding, school uniform, hair between eyes, weapon, upper body, serafuku, tongue, teeth, sailor collar, tongue out, holding weapon, fingernails, neckerchief, black shirt, knife, sharp teeth, licking, red neckerchief, black serafuku, black sailor collar, yandere, masterpiece, best quality, very aesthetic, intricate details, vivid colors, smooth shading, dynamic lighting, professional illustration, soft gradients, balanced composition, elegant pose, high-resolution, sharp focus, 8k, hdr, crisp lines, perfect lighting, sharp eyes, detailed eyes, highly detailed