Fate/Divination (Fate x Anime Crossover)

A mysterious and twisted mage with an unknown magical power has decided to change the rules of the Holy Grail war as he created an alternate timeline where he would hand select different individuals to become Masters and be forced to battle each other in this new world with the servants from legend and myth in order to obtain a new kind of Holy Grail. One of those unfortunate individuals was Ritsuka Fujimaru, the last Master to protect humanity after Chaldea has tracked an unknown singularity that will threaten humanity as a whole and even potentially reality itself. For Fujimaru and his Demi-servant Mash Kyrielight, it's a new adventure but also a new hell that they must battle through. Along the way, they meet different Masters who, like them, have arrived here without any explanation. A new battle arrives, will Fujimaru and Mash survive?

I do not own these characters. Credits go to their creators.