Shinka no Mi - Chapter 5: First Battle

Xiao Yu, who was a student from modern Earth, accidentally transports to another world and becomes the lord of a territory. Facing an unfavorable situation, he vows to take back his family business, build his new territory, kill all of those who covet his wealth, and dominate the world!

- 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.

Blake, a pro gamer and the winner of the Zetron gaming competition for the MMORPG Lord of Legends meets his doom together with few other participants or so he thought.

Together with others, Blake gets summoned over to a world of fantasy and magic filled with danger and mysteries.

However, to go back, they have to fulfill the job of wiping away a foreign civilization that threatens the existence of both the infinite realm and earth