Psyren, Vol. 1  (English, Paperback, Iwashiro Toshiaki)

Don't answer the phone unless you want to...dial into DANGER! Ageha Yoshina just got transported to a warped alternate dimension where you've got to fight your way back to our world--or die trying. "Save me!" Those were Sakurako Amamiya's last words to her friend Ageha Yoshina before she mysteriously went missing. Now Ageha's on a quest to find her. He's convinced that the mythical Psyren Secret Society has something to do with the recent rash of disappearances. And now he seems to be caught up as a player in their very deadly game...