High School DxD - Volume 20 Chapter 3

A con-man and policewoman that are legends of their respective professions suddenly die, then are reincarnated and return to the Tang Dynasty of ancient China as little kids.

Accepting their second chance and forced restart, they choose to use the modern knowledge and specific talents that they have in their previous lives in order to live comfortably in this new life.

- Description from Novelupdates

The sinful act of Humanity brings forth a great calamity towards themselves, or so they thought.

Supernatural Emergence happened,

Supernatural Creatures start to come out of nowhere and forcefully claim half of the Earth and massacre any humans that crossed their paths. The Supernatural Creatures are way too powerful, dozens of countries fall under their diabolic claws. Humanity was pushed against the corner.

But things started to turn around when Humanity begins to Awaken magical power blessed by the gods. They are the pillar of humanity, and they're called Awakened.

Rex Silverstar is a normal human boy that has a traumatic experience on the day the Supernatural emerges, a Werewolf takes everything he had. He lost his family and his home, he's left all alone in the cruel world. But what drives him to live every day is his deep hatred towards the Supernaturals.

Rex decided to join the military in hopes to help exterminate the Supernatural from his early teens, he found out that it's impossible to kill the Werewolf that killed his parent without being an Awakened.

On a fateful night, In a near-death experience, When his soul was about to be taken by Death. He is given a chance by the full moon where his life will be turned around.

Given the chance to get stronger by a system and has the potential to match the Supernatural, Rex was ecstatic before he saw his stats window on the system.

“I'M NOT A WEREWOLF!!”

“Daily Quest failed, Decrease 20% Sanity Stat”

“Blood Moon will start in ten minutes”

“Sanity stat is too low to control the Blood Moon blessing!”

“Forceful Transformation will begin shortly”

“WHAT?! I'm a human! What transformation?!”

“You're Overwhelmed with Bloodlust!”

Emperor Hegemony, Emperor Might, Saint Sage, Supreme Realm cultivators too! A youth who was determined to become a peerless powerhouse had his dantian destroyed due to an accident. Was that a disappointment, or a desire to become stronger? The youth, Ling Xiao, had unintentionally obtained a cauldron, a sword, and watched as Ling Xiao completed the legends that no one had broken since ancient times. He had done everything he could to surpass the heavens and reach the supreme peak! Holy Emperor's fans 423840230!

With a sword in hand and wine in tow, he roams the martial world; her slender waist is light as a feather in his palm.The young man strides forward with a long blade slung over his shoulder and a flask at his side, yet the world of martial arts he seeks remains elusive.As the chaotic world book turns a new page, decades of relentless nights in the martial world pass by.Suddenly, he looks back and finds he has already shattered the mortal realm.