Rule 34 Dev - 1boy anthro anthro_only asriel_dreemurr blush caprine clothed clothing clothing_lift drooling furry gif goat greyscale half-closed_eyes looking_pleasured male male_only mammal monochrome navel nurinaki pants_pull shirt shirt_lift solo_anthro solo_male standing sweatshirt undertale undertale_(series) video_games|644135