This is not the time to have this conversation. Probably. Arturia is tired (she'd forgotten what that felt like), hungry, and in a bad mood all around. Having a human body instead of being a being of spiritual heroic energy is straight up bullshit as far as she is concerned right now. She glances towards Waver for a moment, trying to decipher what the boy is saying. It takes a moment for things to click but yes, that is a familiar face.

"...That was the Fourth Holy Grail War. The Fifth War just concluded." She's a little confused, but trying not to let it show. To help cover it up, Arturia kicks a broom away from her, scowling.

"You must be mistaken."