1girl, blood, dagger, greyscale, holding, holding_dagger, holding_knife, holding_weapon, knife, long_sleeves, looking_at_viewer, monochrome, one_side_up, original, parted_lips, pleated_skirt, sailor_collar, school_uniform, serafuku, shirt, simple_background, skirt, solo, suzunari_shizuku, swept_bangs, weapon, white_background, yuki_arare