Konoha's Tag-System Ninja - Chapter 82 - : Ninjutsu Professor!

“Obtaining the topmost degree of talent in sword arts in the world requires giving up 72 years of lifespan, which leaves you with only five more years of your life. At the same time, you will never be able to feel love, kinship, and friendship, and you’ll end up leading a lonely life until your death, unable to procreate, or to have any descendants.

“From now onwards, everything related to happiness in the human world shall no longer be of your concern. Are you willing to accept this?”

“Hahahaha, I’m already alone bereft of all support, my hopes dashed to pieces, shouldering only absolutely irreconcilable grudge and hatred, why would I disagree? Why would I not want it? I couldn’t ask for anything better!!”

His sword sweeps across the Divine Continent for seven days and nights, moving 90,000 miles through the starry skies, unhindered.

He slays saints and buddhas in Heaven, slaughters demons and devils in Hell, sweeping away all the grievances in his heart.

In an era brimming with noise, where danger and opportunity coexist, the practice of martial arts, various folk customs, strange tales, taboos, imperial courts, and the world of martial artists abound. Among these are the grandmasters, magical duels, ghostly encounters, divinations, invoking the divine, ritual plays, esoteric Buddhism, and the pursuit of immortality.In this diverse and complex world, where the three teachings intermingle and all kinds of people abound, the sphere of mysticism is filled with folklores and bizarre stories.It's a tumultuous time, where danger and opportunity exist side by side.Striding with his saber, Li Yan is determined to dispel all evil and embrace a world free from any taboo!

When an era came to an end, various forces set foot in cultivation to compete for immortality. A young boy who spent most of the time sleeping got lucky in the troubled times and became an unparalleled immortal who could cover the sky with a snap of fingers. Was he going to live forever?

- Description from Novelupdates