Rule 34 Dev - black_legwear black_thighhighs bones ectobody ectobreasts ectoplasm female genderswap genderswap_(mtf) glowing glowing_eyes heart-shaped_pupils heart_eyes killer_sans killer_sans_(fan_character) kotohere_(artist) mega_milk red_body rule_63 sans sans_au sans_oc sitting skeleton solo thighhighs tongue tongue_out undertale_au|4881263000