Fate/Strange Fake

is a Japanese light novel series written by Ryogo Narita, with illustrations by Shizuki Morii. It is a spin-off series based on the multi-media Fate series created by TYPE-MOON The series began publication on January 10, 2015 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
It is a "Holy Grail War full of lies." Is the soul full of the Holy Grail true or--? A few years after the Fifth Holy Grail War, the whereabouts of the "Holy Grail War" that emerged in the western United States ...

Anime
An anime adaptation of the light novel was released as a special by A-1 Pictures on July 2nd, 2023. An additional anime adaptation has been announced with an unconfirmed release date.
 * see: Fate/Strange Fake (Anime).