0shu_0v0, 1girl, adapted_costume, bikini, black_hair, breasts, butterfly_hair_ornament, feet_out_of_frame, floating_hair, frilled_bikini, frills, hair_ornament, hands_in_hair, hands_up, kimetsu_no_yaiba, kochou_kanae, long_hair, looking_at_viewer, navel, pink_bikini, pink_eyes, purple_bikini, purple_eyes, signature, smile, solo, standing, swimsuit