Corrector Yui Episode 42

While facing off against the beetle-like Beagle, a tiny bit of its spit reaches and muddies Yui Kazuga's shoe; little did she know, that its spit petrifies anything touched by it, and she wasn't the exception. Later on, the same monster reappears and causes havoc upon a city, where many civilians and even Freeze are likewise turned into stone. They'all reverted back to normal once Haruna Misaragi defeats Beagle for good.