1girl, black_background, blue_hair, blue_pupils, blue_sclera, blue_skin, closed_mouth, colored_sclera, colored_skin, full_body, heart, horns, looking_at_viewer, monster_girl, multicolored_hair, no_arms, no_feet, original, ribs, ruteko_(ruko220), solo, standing, tail, tentacle_hair, tentacles, two-tone_hair, white_eyes, white_hair, white_skin