Fuuma can't, at least, annoy him for the moment: he just finished one of his casual jobs and will need at least five more minutes to be back.
And it means...

"Meow?"
Hello unknown person who lives in the misterious world behind the wall, Cat heard you and now he wants his crunchies! Oh, come on, why don't you come here to feed him? And to play with him too? Beware his determination, stranger, Osaka's going to assault the enemy wall and call your name until you come to play with him.