MTL - Poison Genius Consort 2: Emperor’s Swallow - Chapter 9 Marriage, this is remembered

The peerless Demon Lord had been reborn. He used a dragon blade to sweep away powerful enemies from every direction and traversed the entire city, attracting countless beauties.

He always told me that he dreamed of me at night.

When Gao Ge is awake, he finds that he has returned to the earth before aura reappeared. The world will usher in an era of practitioners soon. Various schools of cultivation and families of ancient martial arts will spring up. As a man who is living a second life, Gao Ge will never let go of the chance to grasp the resources, cultivation methods and treasure places first.

In this era, there are many geniuses and I, Gao Ge, shall be the king of them.

- Description from Novelupdates

This is a reincarnation/isekai story, about Matt (later TreeTree), an overpowered tree in a fantasy world that serves as the battlefield for an ongoing conflict between demons and the heroes summoned to oppose them.At first a bystander, over a long period of time, TreeTree will learn all sorts of skills, gain levels, and in doing so, build up a forest, train young subordinates, protect a village, and more.