Harry Potter: Eclipse. - Chapter 10:

The orphan Chen Ziyang from Lower River Village, raised on food from a hundred families, was later adopted by the old Divine Doctor in the village. He learned the “Divine Dragon Controlling Phoenix Technique” and embarked on a monstrous and legendary life.

Lan Anran was sent to the countryside by her parents when she was young. In her past life, she was filled with hate and did not end well.With a chance to relive her life, Lan Anran swears that she will never repeat the same mistakes again. On the surface, she is a medical genius and school beauty, but behind closed doors, she is a hacker and master hypnotist. Lan Anran will do all it takes to protect her family and cure her husband, Mo Jinrong."Master Rong is old and ugly, he isn't as fresh and tender as you are. Quick, give me a kiss!" Mo says."Miss Lan, please have some self-respect! Stay… Stay away from me!"

This novel is also known as Lady Is a Dragon

Five years ago, she left an egg and said, “This is the son I gave birth to you. When he grows up, it’s my return date.” He thought she was joking, but the son broke out of the egg a few months later. She looks like a baby, but there are two shiny, cute and cute little dragon horns on her head, but she has no return date.

*

Later, she disappeared for five years, and he also went crazy for five years, until Xiaolongzai brought back a woman, and he sobered up on the spot… But Xiaolongzai said: “Father, although you don’t have a wife, you will soon have a daughter-in-law. She saved me, and I want to make a promise to her!”

*

Since then, the father and son have fallen into open and secret struggles for favor.

“Your Excellency, Ms. Si’s medical skills have amazed the world, and big shots from all walks of life are fighting to spoil her. Your hero is useless to save the beauty…”

Mo Yinhe suddenly fell to the ground, coughing profusely: “Quick, call her to save me!”

“Your Excellency, the seven rivals who were tortured to the point of death by you are all Miss Si’s own brothers, and they want to take Miss Si back to inherit the throne…”

Mo Yinhe announced his abdication on the spot, and dragged his son to live on the street: “Son, from now on Dad can only follow you to your wife.”

The little dragon cub shook the shiny, cute little dragon horns on the top of his head: “Father, I have already contacted you with a nursing home, so that you can spend your old age safely~”

- Description from novelbuddy

The one single goal in life of the Strongest Old Sage is to subjugate the Demon King. In an epic final battle, both of them met their mutual destruction at each other’s hands.

However, the Demon King was not completely destroyed!

In order to destroy the Demon King once and for all; post-death, the Old Sage trains in the World of Gods and reincarnates as the Apostle of the Gods, Will.

In the reincarnated future, the Old Sage had become a legend and his former disciples hold the supreme authority in the world. The disciples had created an organization to oppose the Demon King and an academy to nurture the new generation of Heroes.

Thus the Apostle of the Gods, Will (8 year old), enrols into that Academy of Heroes.

This is the story of a boy on a mission to save the world through epic battles while enjoying Academy life.