my sistra talked to me about this anime long ago but i cant remember the name of it all i know is that in season one, a new virtual reality game came out worldwidely. it was very awaited, but after few hours of gaming, the button to disconnect from the game disappeared due to a virus. once you enter the game, you cannot exit it. and if people outside the game were to remove the headset, it would kill the player in real life. anyone know what is the name of the anime?