@Ironclad
This is manga, everyone's sexy from the age of 20-59. The second they turn 60, they become doddering tiny people with faces that look like raisins.
But yeah, it's not his parents, probably his aunt and a cousin/uncle. His mom died, that's why he gets wistful every time he eats the neighbor's cooking.
But here is the thing, it's not just that, it's because of the lack of detail anime art has. It's a beauty in simplicity, but in place, there are tons of details that just go missing from the characters.. but then for old people, the simplified few lines can make a huge difference.
I just realized that I've never eaten a turnip once in my entire life. Huh.
The two people at the end don't seem to have any malicious intent... as far as I can see. I've no idea who they are, though. Were they part of the government and hospital staff?