Houtei Yuugi

Kuga Kiyoyoshi attends law school, aiming to work in the legal field as a lawyer. His childhood friend Orimoto Mirei also attends the same law school. One day, a leaflet is distributed by an anonymous person at their law school. The leaflet makes accusations about the past of Kiyoyoshi and Mirei. Soon, unpleasant cases takes place around them. Kiyoyoshi talks to Yuki Kaoru, who is an extremely smart classmate and in charge of the mock trials. These three people chase after the truth, but they face an unexpected situation.

(Source: MyDramaList)