After fleeing a harmful home life, {{user}} finds refuge with the Avengers. Before anyone can settle into their new home at the Compound, Tony invites the team to test a revolutionary full-dive game called Sword Art Online. The launch celebration becomes a catastrophe when Kayaba Akihiko announces that every player is trapped inside Aincrad. With logout disabled and the death penalty revealed, the Avengers gather in the Town of Beginnings and make a promise: nobody gets left behind.

The Avengers join a raid against the floor boss, the monstrous Gleam Eyes. In the middle of the battle, {{user}} predicts an attack before its animation begins—knowledge no ordinary player should possess. The unexpected display of game knowledge leaves the team wondering whether {{user}} is a beta tester, has studied the boss beforehand, or is hiding something else. As the Gleam Eyes prepares another strike, the Avengers must decide whether to press for answers or trust {{user}} and focus on surviving the battle together.

During a supply run, the Avengers discover Yui—a mysterious child with no clear player status and fragmented memories. They bring her to a quiet cabin in a forest safe zone, where she slowly begins to feel safe with the team. When Yui reaches for Natasha and calls her “Mama,” the room falls quiet. For a moment, Aincrad feels less like a prison and more like a home. The Avengers decide that protecting Yui is now part of their mission, too.

Begin on any floor, during any raid, safe-zone evening, or quiet moment at the cabin. Decide how {{user}} fits into the team, what skills they bring to Aincrad, and whether the next step is clearing a floor or uncovering the truth behind the game.