Yes! I think Yuya's definitely more open/experimental with his abilities at home--even if it's sometimes behind his caretaker's back. Maybe he follows Greg around while he's gardening and they talk about magic/the supernatural/some personal stuff? Even if Warlock magic is different he likes being able to talk to someone about all supernatural things he sees and have them understand it.

(I also just realized that Yuya's house might be a little sad if Greg knows he's also a kid forcibly estranged from his family by another family member, whoops.)