1girl, ahoge, arms_behind_back, bare_shoulders, blue_one-piece_swimsuit, blush, camui1104, cowboy_shot, embarrassed, flat_chest, furrowed_brow, hair_over_shoulder, light_brown_hair, long_hair, looking_at_viewer, old_school_swimsuit, one-piece_swimsuit, onii-chan_wa_oshimai!, open_mouth, orange_eyes, oyama_mahiro, pink_hair, school_swimsuit, sidelocks, simple_background, sitting, smile, solo, swimsuit, white_background