Naruto: Copy System - Chapter 52: [] : Hiruzen Sarutobi’s Invitation

In the tenth year after the new era, the world finally came to an end. Zhang Mu truefully waited for his death, but unexpectedly found that he had returned to ten years ago. With his memory about the future, he swore that he would change the calamitous history, saving the earth from being destroyed! Walking dead, zergs, evolvers, and various mutated animals… nothing can stop him! The first step is to retrieve his identity as an era merchant , then find all the treasures he can remember to enhance himself!

- Description from Novelupdates

He was the crown prince of the shadow realm and the lord of wrath, Azrael. All creatures, demons, mortals, even angels feared him. However, everything changed after he went for a secret mission in the mortal realm in order to expand his seven sins power.Hiding his identity among the mortals, the vampires were attracted by his royal blood. The mortals were either jealous or admired his abilities. The angels were curious about him. The demons wanted to kill him and take over his power.Little did he know, he had another hidden power sealed inside of him. Something terrifying that could turn him either into the ruler of the three realms or an evil that could destroy all beings.--------------Tags: Mature Content , Comedy , Tentacles, Monster Girls , Yandere , Succubus , Magic , Demons , Angels , Hybrid , Hiding Identity, Goddess , Devil , Battle Academy , Beasts , Action , Mystery , Overpowered , Strong to Stronger , Harem , System , Servants , Handsome Male Lead , Smart Male Lead and a little bit of Slice of Life.

A man who was once called the world strongest agent ended up becoming a teacher after his retirement to train the new generation of agents. After many years of training his disciples, he is killed at the age of 60 by the ploy of a secret organization and was reincarnated in another world with all his past memories.Though he was surprised by the magic and the strange species of that world, he adapted very fast to his condition as a newborn and took advantage of it. He acquired special magic and gained a massive amount of strength thanks to his tight discipline in order to reach his goal: resume his career as a teacher which he left halfway through in his previous life.This is the story of a man who based on the memories and the experiences of his previous life, became a teacher who travels through the world with his new students.

The boy named Ulysses has longed for the respected profession of priest since he was a child, and has been working hard for this ideal. However, by chance, he became the heir to the Demon King chosen by the “Book of Curses”. After experiencing many setbacks and blows, he is still working hard, trying hard, trying to return to the path of priesthood.

However, there are many powerful enemies in front of him.

Always getting lost, the heroic fiancee of Ulysses is single-minded, Rasha; guarding the “Book of Curses”, the little devil Aya who will do anything to turn him into a demon king; very worried and worried about his own children, the extreme north. Earth’s Ice Phoenix mother; Helen, the strongest weapon girl who can destroy the world for her father.

A witch with very bad magic but excellent swordsmanship, a saint with divine power, a dragon who burns like a flame, a Hydra who loves to mate and love everyone together… Today there are also many brave warriors who are ready to crusade against the Demon King.

In front of these lovely and enthusiastic warriors, can he really become a pure-hearted priest as he wishes?

(In this story of love and justice, the girls who can “tear down” the demon king are all brave)

- Description from novelbuddy