1girl, barefoot, black_eyes, black_hair, black_one-piece_swimsuit, cowboy_shot, head_tilt, hugging_own_legs, knee_up, knees_to_chest, looking_at_viewer, matsunaga_kouyou, new_school_swimsuit, one-piece_swimsuit, original, pool, poolside, school_swimsuit, school_uniform, short_hair, sitting, solo, swimsuit, water