I was confined in a game, and then I was attacked by an enemy from a different game.

I, Kazami Kaede, am one of the humans trapped in a certain sword and magic fantasy game. In a world where VRMMO games were flourishing, a sudden incident occurred where all game players became unable to log out. It has been four years since we became unable to log out of the game. Recently, in this world, we have been encountering and being attacked by people using techniques we have never seen or heard of before. Since we don't know what happens in the real world if we die in this world, everyone is afraid.