A- from me. Each chapter is intriguing and new. We don't have any annoying big-breasted characters, all characters are new, and have personality, Even the princess is likable (Which is very hard to do.)
Fight scenes are phenomenal, showing fast-paced, jumping-all-over-the-place, punches/slashes. MC is very interesting, calm-headed, and not a pervert(Unlike some "others".).
The only complaint from me is that the chapters are short.