MTL - Science and Technology Library - Chapter 1046 : Decapitation of the Venomous Girl

The world is vast, and the way of immortality is insignificant. The supreme being in the Nine Realms is called ‘Tianzun’.

——

ps: genius flow! No system!

- Description from novelbuddy

Kain, a young teenager, accidentally lost in a Dungeon and awakened a special system. A system that allows him to continuously return to level 0, using his level to add and increase his skill points. From there, Kain began his journey to find the truth of this world, and when he took off that mask, what he saw was...

As a promise, he went out into the world as an assassin. 3 years later, after becoming the Supreme Assassin, he gave up on everything he had and returned to the ranks of ordinary people. But one day, Kismet, a mystical game created by the National Research and Development had appeared.

Enigmatic hands, spectral frame, and one cunning strike just like the swing of the Grim Reaper. The Supreme Assassin takes on the mystical world, and how his legendary tales sets off, progressively ascending the altar to becoming the best.

- Description from Novelupdates

On the brink of destruction, I regained consciousness and found myself back in the past, 20 years ago. In order to have a peaceful retirement, I must prevent the impending doom.