1girl, :p, absurdres, animal_ears, blush, bow, breasts, brown_hair, casual_one-piece_swimsuit, collarbone, cup, drinking_straw, feet_out_of_frame, hair_bow, hair_rings, highres, holding, holding_cup, horse_ears, innertube, long_hair, looking_at_viewer, official_alternate_costume, one-piece_swimsuit, purple_eyes, purple_one-piece_swimsuit, sitting, small_breasts, sodemaru_unagi, solo, splashing, sweep_tosho_(monopolizing_the_chill?)_(umamusume), sweep_tosho_(umamusume), swim_ring, swimsuit, tongue, tongue_out, twintails, twitter_username, umamusume, water