@Fuyuqi
Hata must be aware that the readers are always discussing how he's flexing his own marriage on us and he wanted to give us some characters we could relate to.
@FredFriendly not really. Nasa has already said that he pretty much knows what the deal is with Tsukasa. He just doesn't care because he loves her and he's smart enough not to make a big deal out of it.
In fact the audience being the ones to clamor for clues about Tsukasa's past while Nasa...