I have been looking for this anime for years, with no luck at all. It is kind of strange seems like there is no record of any kind about this anime.
But I did found this one awhile ago.
I know it is not the same, but the characters looks alike.
Whoever have seen the original one should be able to tell from the cover of this DVD.
The one with the red umbrella resembles ¤s¥ÐZ ( but of course he's much older in the anime ), while the woman beside him with the yellow umbrella looks exactly like his wife. And the other guy with the blue umbrella at the right corner looks like his youngest son.
Still looking forward to find this gem.