1girl, amepa_(ame_pinecandy), animal_ears, bare_arms, bare_legs, barefoot, blue_one-piece_swimsuit, blurry, bow, breasts, brown_hair, covered_navel, depth_of_field, hair_bow, horse_ears, horse_girl, horse_tail, knees_up, looking_at_viewer, lying, medium_breasts, medium_hair, ocean, on_back, one-piece_swimsuit, open_mouth, orange_eyes, outdoors, school_swimsuit, smart_falcon_(umamusume), smile, solo, swimsuit, tail, tracen_swimsuit, twintails, umamusume, water, waves