What do you mean by Anne's children?
Maybe Fear might return, since there's not many ways for Anne to close this gap in firepower...
But the consequences of such a return would be too much so seems unlikely. It'd be funny if an unmasked Fear subs in for Anne.
Maybe Dry?
It does feel odd that they're looking at such high-end watches when Yusuke has mainly been looking at affordable (not quite fast) fashion.
You can get nice watches at a couple of hundred USD range. Japanese brands such as Seiko, Citizen or even Casio offer mechanical watches similar to the...
Perhaps the anti-espionage spells Grandpa Theobald cast during the meeting were effective.
However, Riley is actually a homonoculus crafted by the Irantes magic tower the entire time as a spy using Sharon (Theobold's granddaughter's) body.
Falsch's spell-choice is odd, wonder how it'll be relevant later. Maybe he is a spy for the Shadow Warriors.
I think Serie can't imagine a world where she wins without wiping the empire off the map and killing everyone else.
Also, guess Frieren is trying to minimise Serie's death flags, if...