The Holy Grail War of a Certain Comic

As a seeker who travels in various worlds, Sui accidentally encountered a time and space that was cut off by unknown reasons. She stepped into this world out of interest and temporarily integrated into its life. She discovered the interesting things about this world... It seems that some visitors from other worlds will appear in this world. They will participate in a ritual called the "Holy Grail War" and fight each other to compete for the Holy Grail that can grant wishes... (This book will contain a large number of private settings including self-created characters, and there may be some OOC situations... Forget it, it is just written for my own entertainment anyway, just take it for fun.)