We usually call convenience store "KONBINI".
"Konbini Lunch" is a important item for convenience store in Japan.
Photo above is Onigiri.
It is called "rice ball" in English, but usually it isn't ball shaped.
I think Konbini-Onigiri is smaller than average homemade onigiri.
But Konbini-Onigiri has beautiful shape.
These are Makizushi and Inarizushi.
Makizushi is a rolled sushi.
Inarizushi is a pouch of deep-fried tofu(bean curd) stuffed with sushi rice.
These are Konbini-Bento.
Bento means packed box lumch.
I think average Konbini-Bento is oily in comparison with average homemade bento.
But it might good for young people.