Well this is a new series that recently started in Japan, two chapters have been scanlated:
http://rapidshare.com/files/74979156/Psyren_Call_1.rar
http://www.sendspace.com/file/7d4zoc
So far it looks very promising, with some cool characters for a shounen series. The fights look like they will be interesting and the plot seems good so far. So, I'd say it's worth a look for now... any of you checked it out by any chance?
Yoshina Ageha is a high school student who offers to help people with their problems for 10,000 yen. He'll take care of your stalkers, find your lost animal, whatever you want. One day when he's heading home, a nearby pay phone rings, and he picks it up. The only thing he hears however is his own voice echoing. After finding a mysterious card with the word 'Psyren' printed on it, his life suddenly changes as he is drawn into a crazy new world.
http://www.mangaupdates.com/series.html?id=19081