1girl, black_footwear, black_hair, black_sailor_collar, black_serafuku, black_shirt, black_skirt, black_socks, blush, brown_eyes, closed_mouth, hands_up, head_tilt, knees_up, loafers, looking_at_viewer, matsunaga_kouyou, nose_blush, original, own_hands_together, pleated_skirt, sailor_collar, school_uniform, serafuku, shirt, shoes, sitting, sitting_on_stairs, skirt, smile, socks, solo, stairs