1girl, ass, back, bikini, black_bikini, blue_eyes, blue_hair, blue_sky, closed_mouth, cloud, day, from_behind, halterneck, hands_up, haru4983, hololive, hoshimachi_suisei, lens_flare, looking_at_viewer, looking_back, ocean, official_alternate_hair_length, official_alternate_hairstyle, outdoors, plaid, plaid_bikini, short_hair, sky, smile, solo, star_(symbol), star_in_eye, swimsuit, symbol_in_eye, virtual_youtuber, water_drop