I love this manga, despite MC is OP his emotion is quite vulnerable like superman is. This is why I like him unlike majority of OP manga nowadays.
Female character design also one of the best I saw. Sadly after the author died in early 2009, the artist left because she want to respect author as the one who create the story. So now we stucked at chapter 100 forever.
The story started simple until it became politically complex. Side character also given time to have character growth which is pretty rare todays. I wish people read this manga although another review hate it saying it's generic without knowing in later chapter, it's fixed the flaw of earlier chapter