[ Poor Niina. If they knew anything practical about how Simulacrum worked, they'd feel bad for accidentally setting off... whatever's going on there, really. But they don't know anything the guide hasn't told them, and more importantly, they don't know her. The victory is claimed with delighted surprise. ]

They're different things entirely, Nogi-san, but you're welcome to be wrong if you like. [ Wow???? ] And the original expression is 'beating a dead horse', I believe.

[ Their nose wrinkles in faint distaste. They're not a fan of gruesome metaphors like that at the best of times, but it feels worse then usual. ]

It's a rather morbid one, honestly. I'm not sure where it came from. Why would you beat a dead horse in the first place, let alone as an example of needlessly belabouring a point?

[ Says someone needlessly belabouring a point, with zero irony whatsoever. ]