1girl, ?, adapted_costume, ama_rei, armpits, beach, bikini, blonde_hair, blush, bracelet, breasts, chest_sarashi, choker, green_nails, hair_ornament, highleg, highleg_bikini, hololive, jewelry, kazama_iroha, kazama_iroha_(1st_costume), looking_down, navel, open_mouth, outdoors, playing_sports, sarashi, short_hair, short_shorts, shorts, sky, solo, swimsuit, virtual_youtuber, volleyball, wading, water_drop, wet