1girl, beach, bikini, bikini_under_clothes, blue_sky, breasts, cleavage, collarbone, day, earrings, halterneck, hand_on_own_hip, hat, hawakawa, heterochromia, hololive, houshou_marine, houshou_marine_(summer), jewelry, large_breasts, long_hair, looking_at_viewer, navel, no_shirt, o-ring, o-ring_thigh_strap, ocean, official_alternate_costume, official_alternate_hair_length, official_alternate_hairstyle, outdoors, ponytail, red_bikini, red_eyes, red_hair, shorts, sky, string_bikini, swimsuit, thigh_strap, very_long_hair, virtual_youtuber, wet, yellow_eyes