Things are... Weird lately? That would make a lot of sense to Fuuko.

[Seeing as Minato just showed up in her room the other day and now she's been transported to the beach for seemingly no reason. Yeaaah, she can believe that.]

That must be it! Fuuko is very sorry, from now on if you hear Fuuko talking about aliens please assume Fuuko is really talking about the adorable starfish on the shore!