The New Gate  

ザ・ニュー・ゲート, TNG

The online game "The New Gate" has been transformed into a death game, resulting in the release of its tens of thousands of players. This is due to the efforts of Shin, one of the oldest players who defeated the last boss and liberated all participants. However, after his victory, he was enveloped by an unusual light and discovered that he had been transported 500 years into the future within the game world.