Rule 34 Dev - 2010s 2018 2_girls 2d 2d_(artwork) alphyne alphys alphys_(undertale) alternate_version_available anthro anthro_on_anthro anthro_only bed bedroom black_bra black_panties black_underwear blue_body blue_skin breasts canon_couple digital_media_(artwork) dinosaur dinosaur_girl duo echoheartx elegantfolly female female/female female_anthro female_only fish fish_girl grey_panties indoors lesbian lizard lizard_girl monster monster_girl non-mammal_breasts on_bed purple_bra red_hair reptile reptile_girl scalie undertale undertale_(series) underwear underwear_only undyne unphys video_game_character video_games yellow_body yellow_skin yuri|1012731