And governance. In Fangs, Ichii works for an organization that oversees vampire health. In addition, other vampires create vampire-helpful products and investigate troubling behaviors.
The expanding cast of characters makes sense in vampire literature. As I mention elsewhere, it can also be off-putting. Mafia stories and their equivalent interest me not at all.
Fangs works (at least so far, as of Volume 2) because the text acknowledges the inherit lonesomeness of the individual vampire. Networking is inevitable but not enough. Pairing is the only bulwark against the increasing narrowness of existence. Those pairings--each an "us"--are romantic but also threaded through with "mono no aware," a sense of fleeting beauty.
This approach is helped by newcomer En's character, the classic optimist in a non-optimistic situation. How does this world appear to him?