Since Nero lives with Kyrie and Nico (and the boys) I would think it has an influence on him? Not in how he acts at home, but in ways like he may have mistaken Kyrie's shampoo as his own and goes off smelling like coconuts. (Sorry if this doesn't make sense and I can't quite put this in words 😰😰)
(Nono, I think I captured the sense, don’t worry)
Well, it could be entirely possible that that already started back before DMC4 - it’s not really said, but I headcanon that with basically growing up with Kyrie (and Credo), Nero stayed over a lot.
So when Nico moves in and the boys are part of the mix, too, it’s basically like back then - shampoos get mixed up, Nero sits down in the evening / morning to help the girls with their hair (Nico’s hair can be a right bird nest when it gets all frizzed up after working over weapons for a while). Lunch packets get mixed up and Nico ends up with sandwiches that had the crust cut off instead of whatever she wanted to take with her originally (not that she minds).