Tomo and Ume have neighbors. What we know about them is they don't bother Ume and Tomo. The couple believe they are looked down upon by them. But since the former is true they don't care much about the later.
They should because the onryo might enlist the neighbors help. That is what happens in the Peony Lantern, which inspire my book.
Shiro and family live in an appartment, so they must have neighbors. But we know zip about them.
