This book just uses the setting of the Holy Grail War. There are no characters from the fate world. The heroic spirits are all Mi family's own characters. One good thing is that the battle power will not collapse.
The following chapters after Chapter 273 of this book have different kinds of fan fiction that you want. The overall article covers various types of fan fiction edited with rich and interesting content. The overall article is very rich in content. As long as you empty your mind or think a little, you can have a good reading experience!
This book has it. I highly recommend this Iron Breaking Story. The plot is interesting and not OOC. It is really rare to see a novel with the lone wolf as the protagonist. The author is suspected of being possessed by Scott. With the system, he became a jo-level creature and was hunted down by Ruan Mui all over the world. The robin joined the suspected yandere version of Mygo and was possessed by the original world. This was really fun!