has called the first trial session a grand occasion (to make his case to the public), and I think he wore a suit to show that," defense lawyer Takai told reporters during the lunch break.

If found guilty, Horie faces up to five years in prison, a fine of up to 5 million yen, or both.

Reflecting the high public interest in the case, more than 2,000 people waited outside the court for one of the 61 gallery seats.

Reporters flocked to the court as well, with TV networks airing extensive coverage of the opening session.

A 68-year-old man who identified himself only as Nakamura, spent 20 million yen -- his entire retirement savings -- on Livedoor shares and was among those glued to their sets.

"Miyauchi and Kumagai pleaded guilty. It sounds contradictory that Horie maintained that he never ordered them to cook the books," Nakamura said. He is one of the thousands of shareholders who filed suit against the Internet company, Horie and other senior executives seeking damages to compensate for the plunge in Livedoor shares following the announcement of the probe.

Before Monday's opening session, 10 pretrial meetings that ended Wednesday were held to discuss the facts and evidence of the case, and to arrange the trial schedule.

New rules on pretrial proceedings were adopted Nov. 1 to speed up Japan's notoriously slow judicial system.

Horie's trial is expected to run 26 sessions through Nov. 28, with Miyauchi testifying as a key witness from Sept. 15 to 29. Kumagai will also testify at the 17th session on Oct. 17.

If the trial proceeds as planned, the court is expected to rule on the case by February.