This SnapShots in Akiba site
has some anime, game, or seiyuu related snapshots
taken while walking around in the Akihabara area.
Comments to snapshots@usagi.org.
Starting July 7, 2013 there was a collaboration between the Go Go Curry
stores in Akihabara and the Choujigen Game Neptune anime,
which starts on July 12.
Those who eat a katsu curry can get a Neptune clear file.
There was an advertisement for Neptune above the main Go Go Curry restaurant
on Chuuou Doori.
The clear file has pictures of Neptune and Nepgear on both sides,
holding a plate of curry.
Some of the stores in Akihabara gave out the clear files with a purchase
of any curry with a topping, such as the fried shrimp curry.
The stores also had paper napkins with a picture of Neptune on it.