Legendary Trait Snatcher's Regression

Fifty years have passed. Everyone died, and I alone reached the 100th floor of the Tower. However, all that desperate struggling in the meantime was, in the end, nothing more than a play to them. "Player Lee Su-hyeok. I will give you one last chance. Will you choose regression? Or will you choose return to Earth?" Two tempting proposals from the administrator of the highest floor. Regression—a chance to turn everything back to the very beginning. Return to Earth—returning while losing all memories of this place. My choice was only one. "…I choose regression." [ In 10 seconds, the Tower's tutorial will begin. I wish you the best of luck. ] I have returned. To that moment fifty year...