tsukiyuki mike, daitaku helios (umamusume), umamusume, highres, 1girl, animal ears, bikini, blue background, blue jacket, blue streaks, blush, breasts, cleavage, ear covers, holding, holding water gun, horse ears, horse girl, horse tail, jacket, long hair, looking at viewer, medium breasts, multicolored bikini, navel, one-piece tan, open clothes, open jacket, open mouth, side ponytail, simple background, smile, solo, swimsuit, tail, tan, tanline, thigh strap, two-tone bikini, water gun, white background, yellow bikini, yellow eyes