Return and Create the World

Looking for Fantasy, Power Building, Not a Harem but Not a Holy Book.

I am an old bookworm with a picky eye, and I want fantasy themes. The male protagonist has a domineering temperament, is decisive in killing, but has a bottom line, and has a bit of humor. I am not a stud, but I am definitely not a virgin. The male protagonist adds various skills to form a force and conquer the world!