021_shiro, 1girl, bikini, blush, breasts, bright_pupils, cleavage, closed_mouth, collarbone, earrings, hair_down, heart, heart_earrings, heart_necklace, heterochromia, hololive, houshou_marine, houshou_marine_(summer), jewelry, large_breasts, long_hair, looking_at_viewer, necklace, official_alternate_costume, official_alternate_hair_length, official_alternate_hairstyle, red_bikini, red_eyes, red_hair, smile, solo, swimsuit, very_long_hair, virtual_youtuber, white_pupils, yellow_eyes