MTL - The Almighty Martial Arts System - ~ Chapter 321 one time to return to the second

Once upon a time, a boy was referred to as a “War Hero.”

In another world called Aletia, the boy who had saved the Lost Kingdom, conquered their neighbouring countries, and led to the rise of a grand empire decided to throw everything away, returning to the modern era at the cost of his memories.

As three years passed, the boy who was happily enjoying his daily life was once again called back to the other world.

However, what awaited him was the Aletia of 1000 years in the future.

As his past glories became a “myth,” the legend of the youth referred to as the, “Twin Black Hero King,” begins.

An ordinary student, a wretched peeper, a cowardly teenager with a kind heart. In a terrorist attack, he inherited the knowledge of countless elites, embarked on a path of God Jagged Tu…

He is an artist!

He is a mathematician!

He is a psychology Doctor!

He is a master of fighting!

In fact, he is a man

Taken off raw site:

A wretched, dirty young man is working during the summer when he was caught up in a mysterious explosion. After that explosion, the young man is then left with the memories and knowledge of dozens of the world’s experts.

He has changed, his heart has become cold, iron-blooded. He became a killing machine, his mind turned mechanical, calculative. Everything goes according to his plans and calculations!

In this magical, slaughterous world, a door is opened for him…

- Description from Novelupdates

Liana, a humble omega raised in silence, awakens on her 18th birthday with the scent of her fated mate — the son of the Alpha. But the bond isn't simple. The Alpha has triplet sons, and all three begin to feel the pull toward her. Thrust into the center of political tension and pack rivalry, Liana must confront betrayal, ancient magic, and a forgotten prophecy.As she finds herself entangled with Kael, the stoic firstborn, Jace, the charming troublemaker, and Rowan, the cursed empath, Liana discovers she is more than she was told. Her wolf is the reincarnation of a Luna lost to betrayal. Her bloodline is royal, hidden in shadow. And her destiny is not to choose a mate but to unite a broken world.With Celeste, the Beta's daughter, unraveling in jealousy and Darius, a rogue Alpha with vengeance in his heart, threatening war, Liana must rise. Not as an omega. Not as a mate. But as the Luna fated to reshape the future.