Kyoukai Senjou no Horizon - Volume 7A, Chapter 19: Boy Attacked in a Hidden Place

After Chuzheng is suddenly pronounced dead by a system all of a sudden, her only worry in life becomes—spending money. Ever since she gets stuck with this system, her back is no longer sore and her legs no longer ache. Heck, there isn’t even a time when she goes out of breath.System: Let us set a small goal first and squander a hundred million… Little Miss, stop right there! Don’t activate the invincible mode!(▼皿▼#) Chuzheng: Can you please explain what is this thing that is leeching off me?Random Thing: Babe, you can do whatever you want to me.Chuzheng: (touches her blade) In-In that case, I will not stand on ceremony.System: Little Miss, please put the saber down right this instant! (▼へ▼メ)#LittleMissAlwaysDoesAsShePleases.

He was The Greatest Talent in the Nine Hells Realm.

Shen Zhenyi began to practice his sword when he was four years and two months old.

At the age of seven, he studied the Ten Thousand Sword Sutra. By the age of eleven, he fought against the Yudao in Shangqing Palace. In an instant, he unleashed one hundred and eighty-five sword strikes, making it impossible for anyone to retaliate. The Yudao admitted defeat and deemed him as “The Peerless Genius.”

At the age of 14, Shen Zhenyi, with his Six Forms of the Ancient Sword, surpassed the swordsman Zuo Tianxing who was ranked among the top ten masters in the world, and won the title of “The First Swordsman of the Abyss.”

He now lies crippled. A fraction of the state he was in before. Or so they thought.

- Description from Novelupdates

People called him a genius—but Agares never believed it.Tired of expectations, he abandoned everything to live an ordinary life, working just to survive in a cruel world.But fate had other plans.A sudden transmigration took Agares into a world of swords and sorcery—a land ravaged by demons, ruled by power, and merciless to the weak.To his shock, he awakens as one of the Chosen Heroes. Sounds like a dream come true?Wrong.“That's a cursed job!”“He's no hero—he's a demon in disguise!”“Kill him! For the sake of the world!”[DING! Congratulations, you have obtained a Job.][Name: Agares][Job: Saber]Hunted by the empire he was meant to protect, feared for the power he never asked for, Agares finds himself branded a threat to humanity. All because of a job he didn’t choose.Just as the noose tightens, a red-eyed woman named Liel offers him a different path:“You were born to be more than their hero.”“The empire betrayed you. Humanity rejected you. Even nature turns away.”“Why not embrace what they fear —and become the successor of the Demon Emperor?”Now, Agares has a choice: run, or rise.This is the beginning of his war.A war not just for survival —but for vengeance.

A major event happened recently to the demonic sect – their powerful sect master suddenly went missing.

Everyone comforted each other: “Don’t worry, the sect master must be out pursuing fun, and so on.”

“Well, that makes sense.”

They waited.

Waited and waited.

Waited and waited.

Waited and… Everyone slammed the table: “We’ve waited so long! The sect master must have met with a mishap! Look for him!!” Numerous disciples therefore ran rumbling down the mountain.

On a certain day of the month, a certain sect master opened his eyes and thought in confusion: Hey, who am I?

- Description from Novelupdates