1girl, o, armpits, arms_behind_head, arms_up, bad_pixiv_id, banned_artist, black_hairband, blonde_hair, blush, breasts, competition_swimsuit, covered_navel, cowboy_shot, day, green_eyes, green_one-piece_swimsuit, hairband, hololive, indoors, kazama_iroha, koisuke, long_hair, looking_at_viewer, medium_breasts, one-piece_swimsuit, open_mouth, ponytail, solo, swimsuit, virtual_youtuber