2girls, 3koma, ahoge, animal_ears, black_hair, blonde_hair, blue_one-piece_swimsuit, brown_eyes, collarbone, comic, horse_ears, horse_girl, innertube, kashimoto_riko, little_cocon_(umamusume), long_hair, meme, misumi_(niku-kyu), multiple_girls, new_school_swimsuit, one-piece_swimsuit, open_mouth, pingu, pingu_(series), pool, school_swimsuit, short_hair, smile, swimsuit, terrified_noot_noot_(meme), twitter_username, umamusume, water