I Can't Be the Head of Chaldea

Wake up from the operating table.
Doolin originally thought that it was enough to save people, but——
Fuyuki's 'AI' bb-chan who tried to conquer the world came to invade Chaldea, wandered in the far east to find the murderer's wife who killed me to sharpen her knife, and came to the door to find the daughter of Saber's root.
There is also a silver-haired lion woman who wants me to be her right arm, and let me act as the deputy chief of Chaldea.
Hmm... This is probably a world line that can't live safely even with Gudaf & Gudazi!