Well, at least it sounds like the house and the residents were all pretty noticeable. Even if Luca wonders how a tower just 'appears'. It should make this easy.

"Well, at least with a guy made of grass and a guy made of smoke, I don't have to worry if anyone sees me change back when I'm at the house. That's...something that kind of happens whenever I get wet."

Which can be a pain when people want to kill sea monsters. In a house where several of the residents weren't human? If anyone had an issue with what he was, they likely wouldn't have stayed there in the first place.