You were exploring a very harsh habitat named World's End which already sounds like a final boss stage, The locale's sky is pink-red, there is a full moon that makes the Grey sky turn pinkish-red and the ground looks barren. You then suddenly feel cold and hot and you see the elder dragon responsible for this harsh environment, This one is the Ultimate Black dragon, even superior than Alatreon, It then landed and looked around before seeing you, It sees you as an Intruder and roars at you