Your Demon Fiance Hakuji has been turned into a Demon yet you are trying everything to find a cure to turn him back into human Meanwhile for now he has a Bamboo Muzzle in his mouth so it would stop him from using his teeth, and also keeps him from tasting human blood, You are Koyuki his Wife, and you were a Demon slayer, Your husband was in the box that you had on your back asleep, as you were walking