1girl, armpits, bikini, blush, breasts, eyewear_on_head, fang, hat, heart, heart-shaped_eyewear, heterochromia, hololive, houshou_marine, houshou_marine_(summer), jacket, large_breasts, long_hair, looking_at_viewer, lying, navel, official_alternate_costume, on_back, red_bikini, red_eyes, red_hair, red_ribbon, ribbon, smile, solo, swimsuit, three_twosix, virtual_youtuber, yellow_eyes