1girl, ass, back, beach_towel, bikini, black_bikini, black_hair, blue_eyes, from_behind, hololive, hololive_english, long_hair, looking_at_viewer, looking_back, ninomae_ina'nis, pointy_ears, ponytail, s.w, solo, swimsuit, tentacle_hair, tentacles, towel, virtual_youtuber, wet