I Was Kicked out of the Hero's Party Because I Wasn't a True Companion so I Decided to Have a Slow Life at the Frontier - Chapter 119

An anime otaku who has traveled to the world of full-time hunters, in order to live well, he can only keep getting stronger all the time, burying the strong one after another. Your withered life will be continued by me.

- Description from novelbuddy

This legend tells the tale of the protagonist, Kuroki summoned to protect the demon king from the hero.

Kuroki, unbeknownst to him, suddenly came to another world. He was summoned by the demon king, Modes. The territory which the demon king overrules was in the midst of being destroyed because of the hero. He had no choice but to bow before Kuroki.

“Please save us, Savior Dono!”

Kuroki nodded, deciding to save the demon king due to an unexpected turn of event.

Damien Castro, the God of Lust in the Thousand Starry Domain, was known for his unparalleled mastery of pleasure.His deeds you asked?The Immortal Lotus of the Heavenly Peak Sect, known for her beauty and swordsmanship, fell for his charm.The Frozen Lotus of the Silver Moon Clan, who's cold as ice, was turned into a soft woman.The Empress of the Phoenix Clan submitted to him both in body and spirit.The leader of the Heavenly Shadow Sect, once untouchable to all men, was claimed in just one day.Lastly, the Princess of the Spirit Blossom Sect had her heart stolen while he was just casually traveling.After failing to ascend the Heaven Breaker Tribulation, he died. But when all hope seemed lost, he suddenly awoke in the body of a young man who looked exactly like him, though malnourished.In his return, however, he found himself with a 10 times boost in everything he does. Read as how Damien challenges the heavens once again.

True evil needs no reason to exist.

“All living creatures must die, but I wont. ”

Once known as the most talented and knowledgeable scholar/philosopher across three continents, he basked in the praise and reverence of those around him. However, tragedy struck one fateful night when he bore witness to the cold-blooded murder of his entire family. Driven to madness, he embarked upon the path of power, the path of negative energy, and thus, The Great Demon, Badur, was born.

In a single day, a mountain of corpses were stacked, many of which fell to his blade. However, during his final pursuit of revenge, he met his untimely demise. His soul was extracted and cast into the void, where it would endure eternal suffering.

However, his jouney would not end here……

“What do you desire?”

A grotesque creature floating in the void asked while staring at the bruised and beaten soul of a young man.

[Ding!! Host has received Void grade Treasure]

[Ding!! Goal has been set : Attain True immortality]

A new lease at life is presented

A deal with a Demon filled with resentment

A new journey, a new Dawn

With that the great Demon, Badur is reborn

ps: the book won't progress the way other novels have been progressing. if you don't like a unique development then maybe this isn't the book for you.