Harry Potter: A Certain Ancient Rune Professor of Hogwarts (TL) - Chapter 687

Transmigrating to a parallel universe, Ye Xiao’s spiritual and martial arts skills were awakened. He became a librarian in the martial arts library and awakened the Golden Book Divine Soul.

At the age of seventeen, Xie Xiao Qiu met “him.”

Since then, “he” was engraved on her heart, an unforgettable existence.

Since then, she has been imprisoned by love to the point of madness.

“He” is called Wang Li Chuan. `

Six years ago, her boyfriend Li Chuan left without saying goodbye. Thereafter Xiao Qiu becomes the prisoner of love. She does not understand how such an intense and strong love could vanish overnight. The mystery of Li Chuan’s disappearance shatters Xiao Qiu’s heart. When they meet again Xiao Qiu wavers between advance and retreat. In the face of such a good and patient man, she suddenly understands happiness is never easy to grasp. Crippled or perfection is always accompanied by shadow.

Eight hundred years ago, Xie Lian was the Crown Prince of the Xian Le kingdom. He was beloved by his citizens and was considered the darling of the world. He ascended to the Heavens at a young age; however, due to unfortunate circumstances, was quickly banished back to the mortal realm. Years later, he ascends again–only to be banished again a few minutes after his ascension.

Now, eight hundred years later, Xie Lian ascends to the Heavens for the third time as the laughing stock among all three realms. On his first task as a god thrice ascended, he meets a mysterious demon who rules the ghosts and terrifies the Heavens, yet, unbeknownst to Xie Lian, this demon king has been paying attention to him for a very, very long time.

- Description from Novelupdates

Ajax was an orphan who survives a massacre along with his friends but unfortunately gets separated from them.

Fortunately, after a turn of events, he successfully gains a system which helps him increase his cultivation, but doesn't know what it is called.

But he knows one thing for sure, this system is very powerful and helpful in taking his revenge.

“Whoever you are, I am gonna find you”, Ajax mumbled himself with a disgruntled expression.

In a world where Summoning of an elemental spirit is done through a dream when they are 15 years old, Ajax with the help of a system and his summoned spirits sets out on a journey to seek revenge against the mastermind behind the massacre.