New Life in the world of mushoku tensei

English is my 3rd language. this story is my fan-fiction of mushoku tensei, and it's a way to improve my English since that's what I am studying, and I am in my 1st year in college, I will try to update, but the updating rate is very unstable since I have tests in the next months. the story is about a young talented warrior who was betrayed by everyone who he considered a close trusted person. after his death he meet with a powerful being telling him that he want to make a deal with him. what is this deal? follow the story.