Majo Saiban (jap. 魔女裁判, eng. The Witch Trial)

Toru is a young part-timer who has no interest in social issues. He gets called in as a juror in the trial of a woman labeled as a "witch", charged with a murder over an enormous inheritance. Though it appears that she is definitely guilty, one by one the jurors begin casting their votes for "not guilty." From the shadows, there is a mysterious organization buying control of the jury. At the same time, strange events start happening around Toru. When another juror is threatened, Toru is determined to save her. However, Toru's girlfriend, a newspaper reporter, seems suspicious of their relationship. And so, Toru begins his lonely fight for the truth.
(source: dramawiki)