The title explains it. Not just this one, but the whole series (manga and Season 1).

Now, most people would say "It's episodic, I'd rather not watch it" - but this is why this series is SO GOOD. The storytelling, the setting, the music, everything is so perfectly done. The way each episode is played out, the emotions behind them, the myth (for lack of a better word), it's so enrapturing. I'd say it's "flawless".

This is among the best anime series I've ever seen. I'd recommend it to everyone, try it out, trust me you'll be enthralled from the first episode. (show less)