1girl, asano_(kazusasn), bikini, breasts, closed_mouth, finana_ryugu, fins, flower, green_hair, hair_between_eyes, hair_flower, hair_ornament, head_fins, long_hair, looking_at_viewer, medium_breasts, nijisanji, nijisanji_en, partially_submerged, purple_eyes, purple_flower, solo, swimsuit, upper_body, virtual_youtuber, water, white_bikini