Vampires! For all of Alastor's knowledge about the occult, the wicked, and the things that hang in the gaps between life and death, he knows very little about vampires. He knows very little about Japan, too. Today's a day of firsts for him.
Apparently, there's been a notable number of vampires of interest to Hell in this area. Particularly: vampires that are remarkably horny. Like. Ludicrously so. Off the charts.
This alone isn't worth notice—the sexual habits of vampires are outside of Hell's jurisdiction—but what is interesting is when they use their powers to try to rope humans into it. That's of interest to Hell, particularly the division in charge of Lust. Are they up to anything that could help advance their cause?
There's only one way to find out: investigating. And while Alastor isn't thrilled to get another sexually-oriented job, at least it's a magical investigation instead of a seduction gig. And it does mean he gets to learn about a class of inhuman beings he knows shamefully little about.
So here he is, armed with a handy-dandy universal translation spell to let him seamlessly communicate with the locals and an address he found online, knocking on the door of a local vampire hunter.