Who was the supervisor of Sovereign, the Undead King?

It might not be exactly what you want, but I'll try my best to recommend a novel that's most relevant to your description: "The Captain of Death is My Student" is a light novel by the author, One Star. It's a derivative Doujinshi novel. The general plot of this novel is as follows: What was the truth behind the Death God World? What was the real reason for the death of the Spirit King? What kind of existence was hell? What kind of place was outside of Liuhun Street? Why did the Corpse Soul World only go to a certain island country in his previous life? Shinji Doomiya, who had transmigrated to the world of Death, didn't want to know about this. He just wanted to live a free life without being stabbed in the back, while protecting the people he was familiar with. However, by relying on a cheat he named the Respect System, he had become stronger step by step. Not only had he accidentally taught a bunch of captains, but he had also slowly rediscovered the world. [PS: A lot of foreshadowing, aiming to write a complete world of Death, a lot of original works, warned by 98 Backstab.] ---------------------------- The book "Chaldean's Proficiency" was a novel written by the author, Zero-Dimensional. QQ. The general plot of this novel was: In the world of Fate, what other high-risk professions were there other than Blue Spearman and Stellaer? That's right, it was the specialty of the Chaldeans. The death rate was 100%. Although the sample number was only 2, from the fact that these two did not die of natural causes, it was enough to prove that it was not an easy life. "Larry, the organization has decided that you will take over the position of director. Do your best!" Davinci, the profiteer who was holding a teacup, said. "What organization decision? It was clearly decided by you alone! Dictatorship, autocracy, opposition!" "Anyway, why don't you go and solve the problem of burning people first?" Based on the progress of the Japanese FGO story, the content that will be added to the Clock Tower will only be limited to the Fate world. It will not be added to the other content groups under the Type-Moon Society: 611395119. ---------------------------- "The Immortal Crown" was a fantasy-mystery fantasy novel written by the author, Divine Warrior Bao Guo. The general plot of this novel was: Ron Vladimir slowly turned his amethyst head and swept his gaze across the five kings seated in front of him. A hoarse voice rang out in the hall."I am the sixth king of the World of Death. Who supports me? Who disagrees?" ---------------------------- The book "God's Growth Strategy" was a light novel written by the author, Calamity Star of the Pugilistic World. It was an original fantasy novel. The general plot of this novel was as follows: This was a world of swords and magic. Here, a transmigrator would descend every once in a while. They were like the protagonists in all fantasy novels, with their own golden fingers, so they were also called gods. Wang Buyu was one of the many transmigrators, but he was destined to stand on the opposite side of all transmigrators. Because he was the Grim Reaper, and his arrival was to end all the gods who did not want to die! ---------------------------- "Exclusive Death" was a fantasy sword and magic novel written by the author, Sacred Comedy. The general plot of the novel was: The last deceased, Siman Dark Dome, sat high on the Throne of Bones. The dead were crawling at his feet, the demons were reciting the crimes of the dead, and the Father and the Son stood on both sides of the throne and shouted loudly. How could they talk to God in such a blasphemous tone? How could they be so stubborn in front of God with such disrespectful behavior? "Judgement!" "Judgement!" The ugly demon holding the torch let out a sharp cry. Simon looked at the dead with contempt."I sentence you to live!" A Lich who controlled the power of life, just because he wanted to enjoy death alone among the countless living beings in this plane! Alright, it was His Majesty Death… ---------------------------- "The Guardian Angels of the Legion" was a light novel written by the author, Demon King Wudi. The general plot of the novel was: My queen, you protect justice, and I protect you! If one day I sacrifice myself for justice, I only hope to sleep in your arms forever! No system, no posturing, the pursuit of truth, eternal wisdom! ---------------------------- "The Personal Guardian of the Beautiful CEO" was a novel written by the author, Fa Ziran. The general plot of the novel was: When he was down and out, his lover left him, and the beautiful CEO nurtured him. Would they fall in love? The person he liked didn't like him. Misery, love and hate, life and death…a world that was as dark as the wind and rain…There was also a person called the Guardian VIP group 145523089. ---------------------------- The Undead Elegy of Black Soul was a novel written by the author, One Ember. The general plot of the novel was: After crossing over to Black Soul 3 and dying countless times, the protagonist thought that extinguishing the flame was the best choice, but he was wrong. When he woke up again, he found that this was Soul One's world. As a human, how could he clear the level with only his life? Countless deaths had given him rich combat experience, lethal killing techniques, and an indestructible belief. This was not a simple story of the black soul. There were swords and fire, the divine realm and the human kingdom, the hundred races and humans…The curse of the undead in this world had just begun to spread. You could be a Warrior, Knight, Priest, Mage, Cursemancer…or even a Demon Hunter! Wait, do you want to play a game of Gwent? ---------------------------- Death of the World of Gods was a fantasy, historical, and mythological novel written by Fei Mian. The general plot of the novel was: At the foot of Mount Olympus, Hades gave up his throne to me. On the banks of the Nile, Anubis guards my gate. In the Underworld of Heim, Loli Hila is my maid. In the Hellfire Lake, the Demon King Satan bowed to me. I am Thanatos, the awakened Death. I am the only end, and I am absolutely fair. I walked the worlds and revealed the fate of all living beings. Whether you are a bug, a bird, a beast, a demon, a spirit, or a living being, you will all belong to my kingdom. If you try to resist, I'll let you know that everything will die, and only death will live forever. ---------------------------- The Death Lord was a fantasy epic fantasy novel written by the author who failed to borrow money. The general plot of the novel was: [I was busy a while ago. I hope everyone can forgive me!]』 To survive, the only way for a dead soul to survive in the human world was to kill! My QQ number is 305232948. Everyone is welcome to discuss it together!