Cool! I hope you enjoy it! if you're watching the first one, you'll get to see Masaomi in the very beginning. He's definitely my favorite character in the entire show.
You should be sure to watch the series all the way to the end(of course, I don't mean all at once, that would be impossible), because the ending is amazing. Heck, the whole show is amazing! There are so many plot twists and there's so much suspense... It's just such an awesome anime.