The Vampire and the Changing Seasons

When Akari opens the fridge, she sees that there is no more blood. But when Sophie tries to order it on her regular delivery site, she's met with a note that the service is currently inoperational. Searching on other sites doesn't yield any results either. The next idea is to have Erie share some of hers, but she's also out. Everybody is agonizing about what to do when Erie starts talking about finding a human downtown who wants to have their blood sucked...