MTL - Unexpectedly, I Traveled Again and Again - Chapter 552 please give me your hair

Zhou Yu, a reclusive otaku, who did not like to go out of his house, was one day forced out of his house by a series of unexpected events.

- Description from Novelupdates

Echoes of the Lost Elf – Back Cover SynopsisA legend long forgotten. A war long past. A magus who vanished into history.A thousand years ago, Historias Everglen, the greatest magician to ever walk the earth, mysteriously disappeared after leading the world to victory in the First War against the Void. The high elf, creator of Castellas Academy, the most prestigious magic institution, faded into myth—his name spoken only in whispers, his fate unknown.But history does not stay buried forever.When a group of young students, lost in the Everglen Forest, stumbles upon an enigmatic figure in the heart of the ancient woods, they unknowingly awaken an echo of the past. Unrecognized, Historias decides to return to his own academy—not as its master, but as a student. Beneath his youthful guise lies an immortal being who has spent a millennium mastering magic, swordsmanship, and alchemy in solitude.As shadows of the Void begin to stir once more, the world stands on the brink of another catastrophe. Enemies rise, secrets unravel, and forgotten legends take their place in the present. But one question lingers:Will the world recognize its lost protector before it’s too late?

A young man finally managed to become an immortal, a powerful cultivator able to lord over millions of souls. He took advantage of his tremendous luck and fortune to become the youngest immortal in history. He now wants to create his own sect and enjoy life, one filled with female disciples!

There was a mysterious old man who approached the failed swordsman with the “100 million years button”. A magic button which can achieve the same effect as training for 100 million years if you push it.

The failed swordsman who pushed the button had his doubts, but immediately felt tremendous power rising in his body. So he pushed the button many times.

However it was a cursed button. The moment it was pushed, he was confined to the 100 million years prison of time. The first 100 years were devoted solely to training. After 1000 years he had forgotten why he swung his sword. He stopped thinking completely after 10,000 years had passed. After 100 million years he became crippled and finally managed to return to the real world. At the same time losing all his memories from the past 100 million years, the only thing that remained were his sword techniques. “I can become stronger just by pressing the button!” or so he thought and pushed the button many times after that. Foolishly trapping himself in that 100 million years of hell each time.

As he continued this loop, he began to think “If I destroy this world, will I get out of here?” A few billion years later, he finally escaped from the loop.

This is the story of a failed swordsman trying to make a name for himself in the world.