It only has 2 episodes so far and I read through the latest manga chapters but I am really enjoying this and impatiently wait for the next episode each week, which SUCKS!. The thing I like is he wasn't trained to his current level constantly by prodigies; but had trained in the basics and used those basics to build an ultimate body. Later in the manga it shows his hard work achieved levels of skills only a few in his world could achieve.
The scariest warrior is not the warrior that knows 1000 ways how to slash but a warrior that only knows one slash but trains it 1000 times (Bruce Lee's words but revised to swordsmanship)