The title's long, but I like the show. I've only finished 7 episodes(altogether there are 14 eps, but I heard there's going to be a second series) and I'm really looking forward to see the next. Unfortunately, I have to control myself before I finish it today. Then, I would be bored for the next week.

Well anyways, this show is quite new, so I don't think many people heard of it yet. Here's the sypnosis(laziness to type it myself) from AnimeNfo.com:

The story takes place in Shinjuku, Tokyo.

In spring, a mysterious student transfers to Magami Academy. His name is Hiyuu Tatsuma. Then, he meets Houraiji Kyouichi of the kendo club, Daigo Yuya of the wresting club, Sakurai Komaki of the kyudo (Japanese archery) club, and Misato Aoi who is the student leader, as if they were attracted by something. Being influenced by Ryumyaku or Dragon Vein, which became active suddenly, they are awakened as “persons who posses powers”. Since that day, monsters called “Oni” appear and begin to assault Tokyo. Also, those who use evil power to control Oni appear. To protect Tokyo from them, Tatsuma and his friend stand up to fight. Then, they have to face their destiny….

((I've changed some of their names (Aoki into Aoi, etc) since the info from AnimeNfo and the fansubs are different. But I followed the fansubs.))

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So far I've seen four reviews in AnimeNfo.com and they are rated quite high. And I can see why.