this story is if the gate in shuffle opened in the fsn version of the nasuverse and shirou and rin
and how the magi deal with demons and gods among them
and how the shirou from shirou muyo that never met his true family deals with a harem of god, demon and ever kind of mix.
i will go into new twists with rin as well
and no sakura in his story [ will be explained in the first chapter]
the main story takes place after a post 4th grail war world and pre rin leaving for london
main pairing will be revealed later