1:1 2016 anthro aquatic backlighting blue_background bodily_fluids bust_portrait collarbone ear_fins ear_frill evil_grin eyebrows fangs female fin fish frill_(anatomy) grin hair humanoid icon light lighting long_hair membrane_(anatomy) membranous_frill ponytail portrait purple_body purple_skin purple_theme red_hair saliva sharp_teeth side_view simple_background smile solo teeth toothy_grin undertale undertale_(series) undyne ut_cepo
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