Executioner's League - Chapter 31: The Big Mission of Segrito!

An ineffable rebirth, taking advantage of a mystical magic cube that was produced from rebirthing to pass through various worlds(anime, novel, movie, games, etc), collecting whatever I want to obtain!

- Description from MTLNovel

[First monster slain. Special rune obtained. Level 2 has been reached.]

She was the illegitimate daughter of a wealthy family—abandoned by her father, oppressed by his legal wife, and humiliated by the so-called sister. She watched her mother perish in a raging fire and was thrown into the flames herself.Her name was Janice. And she died in that fire.Ten years later, under a new identity and the name “Janet,” she survives in silence. Forced by her stepmother to marry a wealthy heir rumored to be “paralyzed and disabled,” she becomes entangled in a vicious struggle of family betrayal and ruthless power games.With cold eyes, she watches the hypocrites who once trampled her into the mud—one by one, they will become prey on her road to revenge.Her wheelchair-bound “husband” Philip, the feuding brothers Charles and August… But what she didn't expect was that the boy who once quietly handed her a handkerchief all those years ago would become the most unpredictable piece in her game of fate.She has returned—not for hatred, but to personally end the past that was once crushed beneath their feet.

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.