I love this series.
Yeah, I know the characters can be one denominational at times and the story isn't an epic tale that will last through the ages, but you just can't help but love it.
It knows exactly what it wants to be and makes no excuses for itself. I think in episode one, before the episode starts, A little message pops up that says something along the lines of:
"Yeah, we know this show is not historically actuate. Now shut up and watch it."
Also, while totally off the wall, the baseball episode was one of the fucking best thing I have ever seen in an anime