When Haruka, Yuu and their friends decided to go ghost hunting, they had no idea the "ghosts" they'd find would turn their lives upside down. Black-clad and wielding quantum powers, these knights from the future are after an artifact of immense power that they hope will save their dimension from destruction: the Dragon Torque; and Haruka seems to be the key. As factions within the knights violently disagree on how to proceed, Haruka and the gang are caught up in a fight with the Shangri La, in an existential battle where fates of entire universes are decided.
Hakaze, princess of the Kusaribe mage clan, has been betrayed and marooned on an island by her own people. They seek to revive the Tree of Exodus, an incomprehensibly powerful entity of alien origin, to save the world from the tyranny of its antithesis: the Tree of Genesis that powers their magic. Hakaze, however, believes their efforts put humanity in jeopardy; and with her power limited, she can only reach out to the world to beg for aid. Her call reaches Mahiro Fuwa, a young man grieving the mysterious death of his sister, Aika. He and his friend Yoshino agree to help - on the condition that Hakaze track down Aika's killer with her magic. The deal is made, and the battle that will determine civilization's fate is begun: but who will play the part of its villain, and who its savior?
Both of these anime deal with time travel, confusing powers with convoluted storylines, and are set in contemporary worlds that are in danger of being destroyed.
They also are both very similar in how the dramatic and comedic elements of their stories are told. And are scored with music that sounds unique and hauntingly beautiful.
I would say that Noein is the better anime out of the two, because while both are extremely convoluted, Blast of Tempest gets pretty rushed in the third act and unravels quite a bit. In terms of animation Blast of Tempest is a lot cleaner and flows better with a better use of color (I'm sure uses more computer animation techniques). Noein seems to have more of a hand drawn look (especially during action), which isn't bad, but it can be a little bit distracting and take me out of the story a bit.
In the year 2977, humanity has long passed its peak; machines are able to perform any task a human can, and people have succumbed to apathy. However, there remains one who refuses to accept such an existence: Captan Harlock, a pirate who sails the sea of stars aboard his ship, the Arcadia. He is feared and loathed by most inhabitants of Earth, and yet he is their only hope against the Mazones, a strange alien race of beautiful women that threatens humanity. Thus begins a lonely battle in which Harlock and the crew of Arcadia struggle to stay true to their ideals, while slowly unravelling the sad tale of the Mazones.
Have you ever felt like the world would be a better place if certain people weren’t around? Such grim daydreams might occur when watching the dismal daily news, but on one fateful day, Light Yagami finds that these daydreams can become reality. By pure happenstance, he comes across a black notebook entitled "Death Note", whose text within states that whoever's name is written on its pages will die. With the aid of the death god Ryuk, Light takes it upon himself to rid the world of its corruption, ushering in a new era of purity one death at a time. But as Ryuk foretells, Light's actions will not go unchallenged...
Death Note is another mind boggling anime. Just like Noein it has an evolved story where you'll need to use your head to keep up, yet it doesn't go to the extremes of plot twists, as that would be an impossible task. Death Note is darker and is about human values, and thus isn't as scientific as Noein.
All Takato ever wanted was his very own Digimon; all Ruki ever wanted was a strong Digimon; and all Jen ever wanted was a partner Digimon. Their wish came true, but along with it a string of Digimon came to destroy the world and conquer it. This unlikely trio must now fight with their partner Digimon created from the mysterious blue card and stop the impending doom that is coming their way. Together with some other friends they explore the Digital Zone to find out what is happening, and to discover the mystery behind the D-Reaper. This is not just a regular digital monsters card game, because this time, the Digimon are real!
The cast of each are in about the same age group, with the kids in Noein being a little older, though the target audience for Digimon Tamers is younger anyway. Both series have heavy sci-fi elements involving parallel worlds, ultimately leading up to immense existential threats.
In Noein and Digimon Tamers both, a lot of focus is placed on the characters, their development, and their relationships. They both do a good job of maintaining a balance between the problems of children, the problems of adults, and the wide-scale conflict that takes place as the series builds up.
Kazuki Yotsuga is able to see things that others can't; in his visions, giant robots battle it out in the streets, causing massive damage in their wake. Though his visions have made him an outcast from the rest of his peers, they have attracted the attention of Ken Sanada – a physicist who believes Kazuki’s visions are a gateway into a parallel world! He places Kazuki into one of his inventions and accidentally sends him to the parallel world in his visions, where he finds himself in the middle of a war for control of the world! Kazuki must now become a pilot of one of the robots in order to join the fight for peace, all the while trying to find his way back to his own world…
Parallel universes---that is what these anime are all about. The people who were once familiar in one world may be complete strangers in the next. Although Noein takes a more scientific approach, and Dual contains mostly robot combat, both anime reveal just what can happen when you tap too far into the unknown of parallel universes.