The Diary of a Thousand-Year-Old Vampire's Modern Doting Wife

Vampires have been integrated into modern society. They have a special "Supernatural Creatures Bureau" ("Super Bureau" for short). They need to hide their identities on a daily basis and abide by rules such as "not sucking the blood of living people at will" (living on "synthetic blood packs" bought in supermarkets) and "not showing supernatural powers in front of humans". But this couple always tries crazy things on the edge of breaking the rules and makes a lot of jokes.