It does sound a little like Nino, doesn't it? But then, they've been friends for so long that it probably just rubbed off on him. That and I just have this image that Aiba likes to tease his mother (and she teases him in return).

As for the Ohmiya. Yeah, I didn't write them a 'couple' in this story, but I know that there a lot of people on my friends list who like them. (Well, one really, but it's a loooong story) Anyway, Not written as Ohmiya from my POV but deliberately made to appear vague so that 'certain reader(s)' could view them that way. Does that make sense?