Consecration

In bringing Sirius back, Hermione destroys the Arch. Cursed by its ancient power, she's possessed nightly by a dangerous magical force—one that might consume her if left unchecked. Dealing with the fallout of her actions while trying to free her, Sirius can think of only one means of helping her work off that ravenous nocturnal energy. *premise based on the manga Crimson Spell*