Hm. It'll be a difficult battle especially without the Eternal sword at hand. Besides, I still haven't tried if any of my summons work in this world. I'm simply thankful that I've at least brought all the rings with me. If it succeeds then there's a possibility that there is some sort of connection between this world and ours, possibly through mana. It's a slim chance but we'll at least have hope to defeating him again, if need be.