Ultraman: I’m a Chaos Demon God, and You Want Me to Save the World?

[Invincible] [Myriad Worlds] [Do Whatever You Want] The good news: I've transmigrated, I have a System, and I'm a great demon god! The bad news: I'm sealed away and can't get out, and the demon god has been given a world-saving System! I transmigrated into the Ultraman universe and became the Chaos Demon God, Grimd. I thought my invincible life, where I wouldn't eat beef from now on, was about to begin. Then I found out that not only was I sealed tight, but the outside world was also surrounded by the Four Great Ultras. At long last, my golden finger finally came through. But can someone explain how an evil god ended up with a world-saving script? Well, I'm here now, so let's do this! The worlds of One Piece and Naruto, Spirit Cage, the Strange World, The Three-Body Problem, Warhammer, the Dark Cataclysm... I'll gather the power of countless worlds to help myself soar ever higher. Of course, I can't just leave the Ultraman universe alone. I'll give Captain Zoffy the most comfortable hair wash of his life with my flames, spirit away every Alien Baltan before the original Ultraman can wipe them out, become the strictest father Seven has ever had, upgrade Belial's Giga Battle Nizer, give power-ups to other dying monsters, and turn Tregear into a fanatic... This goes on until one day, Yuanhun breaks free of his seal, prompting the Mysterious Four Ultras to move against him. But when they see Yuanhun glowing with golden light, his body suffused with the power of will, they all freeze in shock. Many years later, Yuan, the Chaos Sovereign, the Holy God of the Myriad Worlds, the Merciful Lord, the Venerable Heavenly Sovereign of All Worlds, said after transcending the Myriad Worlds: Saving the world is seriously addictive!