C179 absorption of blood

It was only leeches that could make her have blood supply for a long time, and letting a corpse have blood supply to both of them was actually a very scary thing to do. In this case, the corpse was absorbing the blood of the leeches every day, and if it was as I expected, the leeches were able to survive until now and still supply Nana with blood, then there should be a sewer underneath