I Became an NPC in Tomorrow’s Apocalypse

I woke up one day to find that I'd become an NPC in a game. And not a game from my own world, either: I'd become an NPC in the same virtual online game from another world. What's more, I was an NPC with a player interface. Watch as our protagonist stirs up trouble in the game and uncovers its secrets. (May our tomorrow never come to an end.)