calder (pixiv3698273), hakui koyori, hololive, commentary, highres, 1girl, :q, animal ear fluff, animal ears, ball, beachball, bikini, black bikini, blue sky, blush, bracelet, breasts, cat ears, cat girl, cleavage, closed mouth, cloud, collarbone, day, halterneck, holding, holding water gun, innertube, jewelry, large breasts, long hair, looking at viewer, navel, ocean, outdoors, pink hair, purple eyes, side-tie bikini bottom, sky, smile, soaking feet, solo, string bikini, swim ring, swimsuit, tongue, tongue out, virtual youtuber, water gun