Rule 34 Dev - 2d artist_request blush cross_sans cross_sans_(fan_character) dreamtale holding_arm humanoid lightsaber_dick nightmare_sans nightmare_sans_(fan_character) sans sans_au sanscest sex sitting sitting_on_chair skeleton soul_sex sweat tagme tongue_out undertale undertale_(series) undertale_au undertale_fanfiction watermark xtale|7209628648