[Rei Yasuhiro, Backyard, Ryuudou Temple]

This woman was a Captain of the Holy Knights from the Church... Christelle something or other. And she summoned an extremely powerful Servant. Of course he would probably be seen as stupid for sticking around, but he was a member of the Yssiria bloodline. Blunders led to triumph in some cases.

He took out his own summoning materials and began to make his own summoning circle.

"Ms. Proutx. I apologize if I upset you with my manner of observation, but I just had to be sure you were a serious competitor in this War. Now that I've confirmed that, I'm curious- would you be interested in allying with me to ensure that this War ends smoothly and as peacefully as possible?"