Despite it's fast paste nature, I still think its worth the watch. The story is pretty fast but that's only cause the show got 13 episodes for its first season instead of at least 24-26. I like the show mostly because of the quick connection of the main 3, the action/animation, and certain other characters. Though, some are definitely rushed when it comes to backstory. So far my favorite characters are Jin Mori, Dawei and Ilpyo, and hopefully others will like them too. I'd say give this show a chance cause it has a lot more to offer in the future!