When Servants get summon into current time, they get basic knowledge of the common sense of the era. But that doesn’t mean they don’t want to experience themselves some of the things they learn about.

For example, Minamoto no Raikou heard about “exotic massage parlors” and when she finds herself short on mana, she joins her Master in the bath with the intention of giving him an “exotic massage”.
*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*