Oh, no! I Became the Sister of the Novel's Tragic Heroine! - Chapter 539 - : Reverse Spy

Three years ago, the animals and plants on Earth underwent crazy and unexplainable changes that included transformations, reversions, and the addition of otherworldly species. And it was the start of a brand-new type of profession in the new generation of humanity – Monster Trainers, people who specialized in taming monsters.

On his 18th birthday, the protagonist of the story, Gao Peng, suddenly received the ability of being able to see the attribute data frame of monsters. With his ability, he aspired to become the strongest monster trainer that ever lived while looking for a method to revive his parents!

- Description from Novelupdates

You emphasized harmony your whole life and this is how you go…!’ The successor of the Spear Master Sect and his apprentice Hyuk Woon Seong were framed of learning a forbidden Demonic art and slayed.

A helpless and pitiful death by the hypocrites of the Orthodox sect.

The moment Woon Seong faced his death, the artifact of the Spear Master Sect emitted light and gave him a new life.

The life as Number 900, a trainee of the Demonic Cult!

The two identities, the Orthodox Sect and the Demonic Cult.

But his objective is one. Vengeance! Accepting his destiny and remembering his grudge, Woon Seong trains in martial arts and his time of revenge slowly comes closer….

Take over the Demonic Cult and punish the hypocrites of the Orthodox Sect! The revenge story of Number 900, Woon Seong growing in tasks of life and death.

Claimed to be the greatest team in the history of the card film industry — “Mu Lei” is born. With even the elites of the academic world unable to decipher these cards’ structure, his powerful cards were able to unnerve even the federation, causing the greatest Card Creators and Card Fighters to grow frantic, triggering open battles and covert maneuvers among various interest groups — all behind the silhouette of Chen Mu. Although he was not the originator of the federation’s unrest, he was definitely the number one reason for continuously escalating it.

Okay, so I know I applied to become a caretaker, but I didn't sign up for having to experience all these crazy things! I'm just a simple guy!