Trial of Accelerator

The Trial of Accelerator was a trial held in Academy City in late December. The indicted was Accelerator, the first-ranked Level 5 and newly appointed Board Chairman, over his killing of the Sisters clones as part of the Level 6 Shift Project and other crimes.

Background
By December 24th, in preparation for his plan to eliminate the Dark Side of Academy City, Accelerator turned himself in to Anti-Skill for his previous actions, deeming it a necessary action, not making an exception for himself as the Board Chairman and intending to take the scorn for the crimes of the Level 6 Shift Project which would come to light so that the Sisters would able to live freely.

Christmas Eve Arc
On December 24th, Accelerator was confined within a secret windowless room under an Anti-Skill station, as final preparations were being made for Operation Handcuffs and his trial, with Yomikawa Aiho meeting with him to talk about it.

During this time, individuals seeking to preserve the dark side attempted to kidnap Last Order to use as a bargaining chip. Despite being easily capable of breaking out and ending the matter himself, Accelerator remained in the room, choosing to believe in the city he was to lead. After the kidnapping attempt was foiled by Kamijou Touma's group and evidence of Director Neoka Norito's involvement was uncovered, Misaka 10032 brought Last Order to the safety of the station, along with the captured 'Maidono Hoshimi', while Yomikawa left to participate in the upcoming operation.

Anti-Skill closed in on Neoka's base in School District 15, with the director setting off an explosion and attempting to fake severe injuries to frame Anti-Skill, in the hopes of buying enough time to eliminate the evidence against him. However, he was interrupted and despite using magic acquired from R&C Occultics, Neoka was ultimately defeated by Touma and left to be taken into custody. With the incident was resolved, Last Order visited Accelerator and tearfully accepted his decision.

Operation Handcuffs Arc
Around the time that Operation Handcuffs was initiated, late on Christmas Day, news of Accelerator announcing his appointment before turning himself in and confessing his crimes was being broadcast. In the news broadcast seen by Aoumi Karei, the reporter mentioned how the unprecedented situation had sent shockwaves through Academy City's general courthouse, with Accelerator apparently indicted but it being unknown to them if the trial would be held as scheduled, with the Board of Directors refraining from commenting. Accelerator himself was in a cell awaiting his trial as he witnessed Operation Handcuffs spiral out of control due to the interference of Anna Sprengel, who had let herself be captured after her actions earlier in the day and was in the cell next to his, and R&C Occultics through the Coins of Nicholas.

Post-Handcuffs Arc
On December 26th, Accelerator was found guilty of 36,025 charges including killing more than 10,000 people, organized crime such as aiding and abetting the creation of clone humans for experimental purposes, assault, bodily harm, property damage, and violation of the Swords and Firearms Control Law. Altogether, he was sentenced to 12,000 years.

On December 29th, following his trial and conviction on December 26th, Accelerator was brought to the special prison below the Special Criminal Adult Correctional Facility which had been built to hold him.