NPC Doesn't Want to Die

In the virtual online game "Hope", the continent of Os has ushered in the collapse, and the demons have opened the door to doomsday. However, after the resistance commander Rory fought with the arrogant demon king, one of the seven demon kings, he was assassinated by another demon king. Unexpectedly, he discovered that the time had returned to the time when the game was first launched, and he had also traveled to Blue Star. In order to prevent Os from being destroyed again, Rory resolutely entered "Hope", and as time went by, he gradually discovered that things were not that simple... But why were these Blue Star people different from what he imagined? This is the story of a group of people who unknowingly save the world.