1girl, :d, bangs, blush, eyebrows_behind_hair, greyscale, hair_between_eyes, hallway, high_ponytail, holding, indoors, long_hair, long_sleeves, looking_at_viewer, looking_to_the_side, monochrome, open_mouth, pleated_skirt, ponytail, running, sailor_collar, school_briefcase, school_uniform, serafuku, shirt, shoe_soles, shoes, skirt, smile, solo