katahira masashi, chen, hakurei reimu, yakumo ran, yakumo yukari, touhou, 4girls, adapted costume, animal ears, arms up, barefoot, beach, bikini, blonde hair, bow, breasts, brown eyes, brown hair, cat ears, cat girl, cat tail, cleavage, contemporary, day, detached sleeves, female focus, fox tail, front-tie top, gohei, hat, innertube, kneeling, large breasts, long hair, medium breasts, mob cap, multiple girls, multiple tails, nail polish, nekomata, one-piece swimsuit, outdoors, outstretched arms, parasol, pink nails, purple bikini, purple eyes, ribbon-trimmed sleeves, ribbon trim, school swimsuit, short hair, side-tie bikini bottom, string bikini, swim ring, swimsuit, tail, toenail polish, toenails, umbrella, underboob, white one-piece swimsuit, white school swimsuit