Juror 13

Official English: INKR

From TokyopPop (based on volume 1):

Jeremy Rosen's life seems to be unraveling. His fiance has left him, his friends are acting strangely and something's just not right at the office. With the arrival of a mysterious jury summons, Jeremy is thrust into a whirlwind downward spiral as he becomes caught up in a dark web of scams and double-crosses. Suddenly, in Jeremy's life nothing is what it seems, no one can be trusted, and the simplest of actions can have the most shocking results.