1girl, black_sclera, blue_background, blue_hair, blue_skin, bubble, colored_sclera, colored_skin, colored_tips, completely_nude, fins, full_body, gradient_background, head_fins, looking_at_viewer, monster_girl, multicolored_hair, no_arms, nude, original, red_eyes, red_hair, red_skin, ruteko_(ruko220), sea_slug_girl, simple_background, solo, tentacle_hair, translucent_hair, translucent_skin, underwater