One of the best series I've ever watched. This is one of those series where since episode 5 you're checking which episode you're on, hoping there's plenty more to go.
Story -Despite being an anime, the depth of the plot and background is comparable to Tolkien. The meticulous unravelling of past events and ancient lore is nothing short of a masterpiece. Prepare to get sucked into a world that leaves you yearning for more after each episode.
Art/sound - Art perfectly suits the series' fantasy setting along with its brilliant aptitude for adding the right amount of humor in every episode.
Character - This is where the series shines. You'd expect the characters to run dull after hearing of 7 (yes, SEVEN) main characters along with a horde of side characters. However, every character brings a perfect balance of individuality and uniqueness without hogging precious screen time. The characters are also introduced in a spectacular fashion; where you know its coming, but you're just waiting to see how it unravels.
Enjoyment - Although there are some plot holes and inconsistencies with the strength of characters, lore, reasoning, the show was incredibly enjoyable to watch.