Review Detail of mr_popo in Simply Trading

I'm only at around chapter 40 but it's a good novel so far. Writing is good, altho sometimes a bit confusing or minor mistakes. Update stability, probably good? Story development, I'm a bit confused about who old man mountain is or what exactly our mc is but i hope to find out. Character design, they don't feel like cardboards so far. World background is good so far. I gained exp doing this.