1girl, animal_ears, armpits, arms_up, bikini, black_bikini, brown_hair, ear_covers, green_bikini, green_sarong, grin, horse_girl, horse_tail, hp23, inflatable_dolphin, inflatable_toy, king_halo_(umamusume), long_hair, looking_at_viewer, navel, outdoors, red_eyes, sarong, smile, solo, standing, stomach, swimsuit, tail, teeth, two-tone_bikini, umamusume, wading, water