Sword Art Online

A year has passed since SAO was cleared. Summoned by Kikuoka of the Virtual Division at the Ministry of Internal Affairs and Communications, Kazuto learns of a series of bizarre murders linked to the popular VR game, Gun Gale Online (GGO), the only game in Japan played by pros.

Armed with a large sniper rifle, Hecate II, the young girl Sinon is making a name for herself as the No. 1 sniper in GGO. When her squadron ambushes another squadron, she succeeds in taking out her first target. But when she takes aim at her second target, a robed “Behemoth,” he dodges the bullet.

In real life, the player Sinon is a high school student named Shino Asada. On her way home from school, she’s dragged into an alley by delinquent girls. Their leader, Endo, tries to extort money from Shino, but she bravely refuses.

Kikuoka has recruited Kirito to investigate GGO, and so he logs in. To lure Death Gun into targeting him, he hopes to enter Bullet of Bullets (BoB), a tournament to decide the most powerful gunman in GGO. But as a first-timer, he doesn't know his way around this game, and soon loses his way, when he catches sight of Sinon and approaches her.

To register for BoB, Kirito starts entering the required information into a terminal, but is astounded to see that the form includes columns for his real-world name and address. He is temporarily torn when he realizes that without this info, he won't be eligible for the top prizes...

A man in a beat-up cloak watches Kirito fight his first battle and demands to know if he's "the real thing". The man has the tattoo of Laughing Coffin, a murderer's guild that existed within SAO. He tells Kirito that he'll kill him someday, and vanishes.