2girls, ahoge, animal_ears, armpits, arms_behind_head, arms_up, beach, beanie, bikini, bikini_shorts, black_bikini, breasts, brown_hair, closed_eyes, closed_mouth, comic, expressionless, frilled_bikini, frills, hand_up, hat, holster, horse_ears, horse_girl, horse_tail, large_breasts, long_hair, looking_at_viewer, maruzensky_(blasting_off_summer_night)_(umamusume), maruzensky_(umamusume), multiple_girls, nakayama_festa_(entrust_myself_to_the_dice)_(umamusume), nakayama_festa_(umamusume), navel, official_alternate_costume, open_mouth, outdoors, ponytail, purple_eyes, riccovich, sand, shorts, small_breasts, smile, sparkle, string_of_flags, swimsuit, tail, tracen_training_uniform, umamusume, water, water_gun