Obentou is Japanese and means Lunch Box
'Obentou' is basically what the Japanase call a packed lunch. You can buy pre-prepared obentou, or you can make your own.
The cast of Pikunikkumuke no obentou - 1955 includes: Anna Nikaido as herself
I've often seen Japanese students with sugared egg rolls in their obentou (lunch boxes), so not a rare delicacy.