Where Did I Come From? Is This Still the Delta?

World view: Operation Delta + a small amount of Dark Zone Breakout + a small amount of Resident Evil =? Guan Shan traveled to the world of Operation Delta and became a player. He was pleasantly surprised to find that he seemed to be the only one who had played Delta in this world. Just when he wanted to rely on his advantage of being more familiar with this world to get one step ahead... "What does it mean that GTI urgently seconded a group of new troops from Twila? What does Huffke mean by announcing an in-depth cooperation with Umbrella? " No, where did this come from? Is this still the Delta?