2girls ? animal_ears arm_up armpits artist_name bare_shoulders bikini bikini_day blue_dress blush brown_hair collarbone commentary creature_and_personification dated denim denim_shorts dress flower frilled_bikini frills halterneck hibiscus highres horse_ears horse_girl horse_tail inflatable_toy long_hair looking_at_viewer mejiro_mcqueen_(racehorse) mejiro_mcqueen_(umamusume) midriff multiple_girls navel nozomi_fuuten open_mouth outdoors palm_tree ponytail purple_hair shorts smile solo_focus sparkle swimsuit tail tokai_teio_(racehorse) tokai_teio_(umamusume) tree umamusume water wet