Ah, Mash... The starter servant and the only Shielder in FGO. Also, according to this doujin, in possession of limitless stamina and sex drive, capable of running her master dry.

Abandon all hope for a plot here, this doujin is 100% lewd Mash from cover to cover!
*All characters depicted in this work of fiction are adults, regardless of their visual representation or textual description, and are not based on any real person*