Chapter I: Yekaterinburg

The Russian Singularity is in turmoil as the daughter of the last Tsar of the Russian Empire is captured by the very man who ordered for her families execution, however she has no memory or recollection of who exactly made the order. Now Ivan the Terrible is in danger of being killed before becoming Tsar without the help of Anastasia.
Mash and Ritsuka must get to Ivan and keep him alive long enough for him to become the first Tsar of Russia while rescuing Anastasia.

Disclaimer: I do not own Fate all credit goes to Type-Moon and Aniplex.
Warning: Might contain smut.