MTL - Ninja School Teacher, I Can Become Stronger By Teaching - Chapter 391 Father and son meet across time and space (End of Dragon Vein)

On a normal boring day, a message appears, inviting him to a Tutorial.

Violence, Rogue, two names that had long since faded away from the limelight. In a new game, The Strange World, they appear once again. The two former legends, once more rise to glory.

- Description from Novelupdates

In a post-apocalyptic world where humanity survives in fortified cities, only a lucky few awaken Talents, supernatural powers that allow them to level up.Isaac believed he was destined for an ordinary life—until he awakened the Bonded Blessings System.This system granted him a unique ability: he could share the talents, abilities, and progress of his wives.[Your wife, Sword Empress, has reached Overlord rank. Sharing progress…][You have leveled up 10 times and reached Overlord rank!][Your wife, Ghost Queen, has unlocked the full potential of her Nether Eyes. Sharing progress…][You have awakened Supreme Demonic Nether Eyes!][Your wife, Dragon Saintess, has purified an Ancient Dragon Heart and absorbed it. Sharing progress…][You have awakened the Ancient Dragon God's Bloodline!]Killing monsters? Grinding for levels? Why bother when his wives could do it for him?As long as they grew stronger, so did he!

The world is made up of the five elements, and it could be divided into Yin and Yang.Beneath the heavens, on the ancient divine center continent, billions of lives thrive in the prosperous era of the cultivation.Across its vast lands, happiness, sadness, reunion, and separation played out in the long lives of those seeking immortalhood.Light is always accompanied by darkness, and under the radiance of the heavens, there are silent shadows moving about…