Crown of Thorns - Chapter 3

The afterglow of the Middle Ages has not yet dissipated, but the best times have come.

The protagonist travels through Edward VI of the Tudor (duo) dynasty in the 16th century, centralizes power, rebuilds the parliament, and establishes the United Kingdom of Britain. It will take you to experience the most powerful dynasty in Britain, the dawn of the empire on which the sun never sets.

In the vast Marvel universe, where superpower was still slowly growing in its infancy, several peerless superheroes tried to find their path in The Marvel Universe. A young adult named Ron from modern Earth unwittingly stumbles into such a world and begins his journey with an unknown power. This is a magnificent yet unknown true marvel world! This is the story of a normal young adult and his adventures!

- 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.