To start off, I love the concept of HAVING A TREE FOR A HEAD?? Unheard of. Truly. I love the imagery and meaning behind it. It represents a lot of shy people in today's time.
A few questions: How does he talk, does he eat anything different, and what exactly are cursed people?
Though I'm sure you plan to address these questions already later in the Novel, I WANT TO KNOW NOW!!
Okay, besides blind enthusiasm, I do have a few comments regarding the Novel. It seems that the chapters are quite short, which can be a good thing. When an author doesn't wish to overcomplicate their chapter, leaving it short isn't a bad thing! However, taking breaks to describe the imagery in a situation or explain something else entirely isn't a bad idea either.
I'm going to have to give it a 7/10. I love the concept and your imagination is stunning! Some sentences and scenes are lacking in description. It's important to remember that just because you know what's going on, doesn't mean the reader can picture it the same way! However, despite those things, I really did have an awesome time reading it anyways! Looking forward to more content, certainly.