Akuma No Riddle, v. 1 by Yun Kouga - 164 pages
Takaku is sent to Myojo Private School to participate in the special Class Black. Class Black is made up of 12 assassins all aiming to kill the 13th student Haru. But will Takaku be able to kill Haru?
This is the first in a short manga series. I found the premise interesting -- a little similar to Assassination Classroom which I really enjoyed. However, I found this book to be slow. It might be because it is a lot of character background setting up the story. I'm not sure if I'll keep reading the series or not.