Academy's Extra:The APEX LEGACY - Chapter 2: End And Beginning-

Surgeon Guan Ryo Is reborn in Naruto’s world! Enjoy his trip as he uses his knowledge of the story to find his path in this troubled world and eventually stand at the top of Konoha!

A wonder falling down from heaven! A boy possessed by strange blood! Gods tremble! Demons flee! A boy from the land of Dong Zhou. A pink skull as his sworn friend until death. A story of a determined warrior struggling for power. A legend that shakes the galaxy and disturbs the worlds of god, demon and man.

- Description from Novelupdates

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

Time is an illusion, and reality is a fragile thread in Kael's fractured world.Kael's life is defined by darkness, memories that flicker in and out like glitching shadows. Struggling with haunting nightmares and terrifying hallucinations, he finds himself trapped in a reality that doesn’t make sense—a reality where time is breaking, and nothing is as it seems.When a mysterious red notebook, filled with cryptic symbols, falls into his hands, it opens a gateway to a world where the laws of time no longer apply. Every hour, every minute, every second twists and warps, and Kael begins to realize that something—or someone—is manipulating time itself, pushing him to the edge of his sanity.But he's not alone. A girl, whose existence is as twisted as the world around them, seems to be connected to his suffering. Kael's bond with her grows as they both search for the truth behind their disturbing experiences, yet the more they uncover, the deeper they fall into an abyss of despair and madness.The Pulse, an unfathomable force that distorts time and reality, pulses through their very existence. As Kael inches closer to the truth, he faces a devastating choice—one that could either save them or shatter everything they hold dear.Time is collapsing, the Pulse is awakening, and Kael must confront the horrors lurking in the fractured timeline before it consumes them all.