Dracula's on the Night Shift — Satoshi Wagahara

Vampires, who cannot be exposed to sunlight, have been able to integrate into modern society by only going out at night. Yura Toraki is a vampire who works the graveyard shift at a convenience store in Ikebukuro. One day, he happens to save a woman named Iris, who turns out to be a member of an order of vampire exterminators! Before he knows it, Yura is living in the same apartment as his should-be nemesis!