The Giant God Worm appeared as expected.
Leon just learned that Jasas was forging the sword according to the Divine Artifact standards for him. If there was any mishap during the process, it would become a legendary-level sword. Even though the probability is low, if everything went perfectly, they might end up with a Divine Artifact-level sword.
Under these circumstances, he absolutely wouldn't allow the Giant God Worm to disturb Jasas. He needed Jasas to be completely focused, so upon spotting the Giant God Worm from afar, he immediately spread his wings and flew up.
The Giant God Worm had a thick shell that could effectively defend against physical attacks. At the same time, it had resistance against magic, weakening even Leon's Samadhi True Fire sprays.