1girl, ass, bare_back, bare_shoulders, bikini, blue_eyes, blush, breasts, from_behind, hololive, looking_back, natsuiro_matsuri, natsuiro_matsuri_(hololive_summer_2019), official_alternate_costume, one-piece_tan, petite, ponytail, sakanaya_(sakanaya952), small_breasts, solo, swimsuit, tan, tanlines, virtual_youtuber, yellow_bikini