Re: Family of Hatsu Kakurai

Kakurai is a common surname in Mito.
I found a postmaster whose surname is Kakurai in Mito on internet search.
Here is the URL.
http://map.japanpost.jp/pc/syousai.php?id=300106750000http://map.japanpost.jp/pc/syousai.php?id=300106750000

If you don't find any clue of your family yet
it might be of some help to contact the post office above.