As head of her guard, Minako would be worried once she noticed their disappearance. It wasn't that Mamoru was incapable of protecting Usagi so much as the senshi had been tasked with guarding her when they were allowed to be reborn on Earth. That was their purpose in life, and having spent seventeen years of his life as one half of a whole, he understood how empty it made you feel to be without that purpose.

"They're fine, Usako." Don't ask him how he knows, he just does. "Stop worrying." He smooths a hand across her hair in the valley between her odangos, kissing her forehead. "We're okay, and so are they."