Dangai University Database Center attack

The Dangai University Database Center attack occurred on the night of October 3, on the Dangai University's Database Center building carried out as part of an elaborate assassination attempt on Misaka Misuzu's life by Academy City via Skill-Out.

The plan was a complete and utter failure by the Skill-Out gang lead by Hamazura Shiage, as their initial plans were completely dismantled during the operation as well as internal strife between the members. The operation resulted in only their side receiving any casualty, with several members of the gang having been killed and incapacitated during the separate assaults of Accelerator and Kamijou Touma.

The Recovery Movement
The Recovery Movement refers to a number of parents and guardians who have become concerned on the impending war between Academy City and the Roman Catholic Church and has demanded their removal from the city, seeing that it will be turned into a battlefield. Misaka Misuzu is one of these parents and has become a representative for the movement. Misaka Misuzu states that she was trying to get her daughter out of Academy City worried for her safety due to the war starting.

Seeing her as a problem, Academy City allows her to use Dangai University's database center for her university report in an effort to isolate her as so to allow Skill-Out to assassinate her.

Aftermath of the Skill-Out uprising
After Komaba Ritoku's death, Hamazura Shiage a member of Komaba Ritoku's Skill-Out gang gets promoted as it's leader of the gang. However, because Shiage has yet to garner any respect from the gang, he is looked down upon by his fellow Skill-Out and give little regard for his leadership.

Even then, however, under his command Academy City orders the Skill-Out in assassinating Misaka Misuzu. With their reward being not completely wiped out by the city's operations to take back the back-alleys from them.

Planning
The plan was for Skill-Out to approach the facility in a vehicle stolen under the cover of darkness, fire 8 of their handmade incendiary rockets into the building and then escape quickly, hoping that the attack would kill Misuzu. The Skill-Out also had a rough sketch of the facility, allowing them to shoot their rockets in areas that would block off all the exits and having a good chance to fill the facility with smoke.

Academy City gave assistance to Skill-Out as well for the operation, allowing Skill-Out to destroy the facility if necessary just to complete the mission (though also have the main data of the facility already backed up). Academy City isolated Misaka Misuzu in the facility to such an extent that the only a few private guards are left within the facility. The Anti-Skill seems to have been manipulated as well, seeing as they did not respond to Misuzu's calls during the attack.

At the time of the attack, Accelerator, as a member of GROUP has been invited to assist or to supersede the mission, though he declines and had his esper powers disabled as consequence.