IS-7 Incident

The IS-7 Incident refers to the murder that took place in the mansion of Issei Tenkai at December 24, 2001. It directly lead to the DL-6 Incident and indirectly affected the SS-5 Incident. The incident revolved around the trial of a famous television chef, Issei Tenkai, who had been accused of killing Isaku Hyōdō. His defense attorney, Gregory Edgeworth, faced the infamous prosecutor Manfred von Karma. He lost the case, but he managed to prove that von Karma had to manipulate the autopsy report, since the victim's body was never found. As a result, Tekai was charged with accomplice to murder instead and von Karma was given a penalty, the first he had ever received. The case was put on hold for 18 years, because the witness and only other suspect, Yutaka Kazami, fled to Zheng Fa.

The Incident

 * Main article: The Inherited Turnabout

Aftermath
Two years after DL-6 was resolved, Edgeworth, with the help of his father's old partner, Tateyuki Shigaraki, solved the IS-7 Incident and was able to find the real killer of Hyōdō. The defendant, Issei Tenkai, was set free. It was supposed to have the same statute of limitations as the DL-6 Incident, but due to the witness fleeing the country, it was extended for 3 more years.

The day after this case was solved a new light was revealed about DL-6. Bansai Ichiyanagi said that he was the one who made Otome Itami forge the autopsy report. He was also the one responsible for giving Manfred von Karma his first penalty, which became the starting point of DL-6.