Shinjuku is an important city en route from vampire territory to Shibuya. It is famous for experimenting on vampires.
This is a large city maintained by the JIDA. Although it is well-kept since the Apocalypse, it suffers extensive damage during a vampire attack. The underground houses the experimentation for their numerous vampire guinea pigs. It also contains some high-tech laboratories.
Like Shibuya, this city is ruled by the JIDA and Hiragi family, although this is not their main headquarters.
Vampires attack Shinjuku. The battle is close and exhaustive, but the main army of the JIDA arrives and chases off the vampire invaders. The city acquired extensive damage.