So...where is the neighbor?
The title implies that the story will be told from the perspective of someone who is neighbors with the Yamadas, and yet, that never happens. It's solely focused on the family...no one else.
Sure, some neighbors and the community come into play at times, but they certainly aren't focused on near enough to be in the title of the film--and they're numerous people, not one person warranting "My".
So...what do you think, why is it called what it's called?