1girl, alternate_costume, ass, ball, beach, beachball, bikini, brown_hair, cloud, cloudy_sky, day, from_behind, gs_(onsen_syndicate), holding, holding_ball, holding_beachball, hood, hooded_jacket, jacket, kono_subarashii_sekai_ni_shukufuku_wo!, looking_to_the_side, megumin, ocean, open_mouth, outdoors, red_bikini, red_eyes, short_hair, short_hair_with_long_locks, sky, smile, solo, swimsuit, thigh_strap, white_jacket