Makunouchi

Makunouchi(幕の内) is a popular type of Japanese bento which consists of fish, meat, pickles, eggs and vegetables along with rice and an umeboshi. There are also other kinds such as a chestnut-rice, sweetfish sushi and meat-and-rice-casserole forms.
The word makuno-uchi bentō ("between-act bento"), dates back to the Edo Period (1603 to 1867), when they were served during the intermissions (幕間) of Noh and Kabuki theater performances.