Ryn of Avonside - 127: Treesearch

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.

He, since childhood, had followed the Foreigner to practice the Defying Heaven Art, entering the most secretive special forces and becoming a fearsome assassin that made others tremble at the mere mention of his name. After a single failure, he took early retirement, but he ended up as the personal bodyguard for a rich heiress, a school beauty. Accidentally provoking some mysterious Cultivators, he gradually unveiled a hidden world of Cultivation beyond the mortal realm...

On a normal boring day, a message appears, inviting him to a Tutorial.

Upon reaching home, the number of little girls at home has doubled from one to two?! Moreover, no one in the family actually noticed this strange situation… Jiang Ziya possesses a strange left eye that lets him see things he shouldn’t be able to see. Usually, turning a blind eye to them is his life principle. However, something that shouldn’t be there has appeared in his house. This time, he can no longer continue pretending that he hasn’t seen it. So what should he do next?

This world has never been peaceful. Sometimes, just “seeing” things is dangerous. Facing the unknown, are you willing to choose to see – the truth?