1girl, animal_ears, black_one-piece_swimsuit, blunt_bangs, breasts, cheesecake_(artist), cleavage, creature_and_personification, eyewear_on_head, gold_ship_(racehorse), gold_ship_(run_revolt_launcher)_(umamusume), gold_ship_(umamusume), grey_hair, holding, holding_water_gun, horse, horse_ears, horse_girl, horse_tail, horseback_riding, long_hair, looking_at_viewer, number_pun, official_alternate_costume, one-piece_swimsuit, purple_eyes, riding, sunglasses, swimsuit, tail, tongue, tongue_out, umamusume, water_gun