Noein is everything you would expect from a mature 26 episode anime. Great interface, an interesting plot, and a nice and memorable young cast with some excellent back story to them. The story revolves around Haruka, Yuu, and Karasu. Haruka is the only hope for the future when a mysterious party referred to as Shangri-la invades La'cryma, the future. She is what they call a dragon torque. Yuu is her bestfriend, and Karasu is Yuu 15 years in the future and one of the best and most notable dragon knights. The ultimate entity, Noein, is out to destroy everything that could possibly exist, but only the dragon torque can prevent that.
The story is rather simple. Actually it's not simple; it has depth, but for its length you would expect a lot more. Noein has a lot of back story to it that is going on between the cast. In fact, it is safe to even say that it overlaps the slice of life genre. There is a lot of good character development to go around that you feel sort of an attachment to the entire cast when you are done watching the show. A lot of the minor characters have great development to them that you have that tingling feeling in your stomach when a major incident occurs to them. Noein is also a very smart slice of life with its situations and reaches a bit into the philosophical phases.
The only problem is that there might be too much of this slice of life stuff and not enough of the main plot. Noein could have easily been a 13 episode anime if it got straight to the point. Most of the character development would have been eliminated in that case but to stretch it out is also a detriment. Noein is also heavy on the department of quantum physics which is the science of inter dimensional traveling. It spends a great deal of time explaining this science but the other problem is that it feels a bit too much like school. It is nice to be educated but there is a reason that school is normally not naturally liked, and Noein uses this approach.
As an art Noein is very successful. Its visual dynamics is one of the best out there containing some very exciting and blood boiling battle scenes with some very nice audio tracks and songs to compliment it well. The only problem is that there might not be enough of this to compensate for the slow moving plot. For a 26 episode anime, you would expect a lot more action when one of its main selling points is its action and nice graphics.
Overall, Noein is simply solid and worth a watch. Visually stunning, heavy on science, but a slow moving plot bars Noein from being an all time great. At first sight you will be appealed by its animation quality, but you will end up liking it for its strong supporting cast, slice of life scenarios, and long winded yet intriguing plot and story. Of course you will still like its action scenes, but the action will feel more like a compliment if anything. Though if you are someone that doesn't mind learning a thing or two about quantum physics or are already educated on the subject, Noein might be one of the best animes for you.