1girl, arms_behind_back, ass, ass_visible_through_thighs, bare_shoulders, barefoot, bathroom, black_hair, black_one-piece_swimsuit, blush, breasts, brown_eyes, collarbone, crotch_seam, dot_nose, feet, full-face_blush, full_body, indoors, light_rays, looking_at_viewer, matsunaga_kouyou, on_floor, one-piece_swimsuit, original, outstretched_arms, parted_bangs, shadow, short_hair, sitting, small_breasts, smile, solo, sunbeam, sunlight, swimsuit, tile_wall, tiles, toes, wet, wet_clothes, wet_hair, wet_swimsuit