Sakuya Izayoi works day after day as the Scarlet Devil Mansion's head maid for the mansion's sake and for Remilia's. Her ability to manipulate time and her skill with silver knives make her a formidable opponent in battles of bullets.

Countless novels tell of vampire hunters and vampire slayers, many of whom possess extraordinary abilities. However, similar characters appeared in folk tales long before such books gained popularity. It's still unclear whether vampire slayers exist or if they ever existed at all.

Few know the true past of Remilia, the mistress of the Scarlet Devil Mansion. Who she was and where she came from are still shrouded in mystery, but judging from her abilities and strength, she probably didn't arrive here via a peaceful road. It seems natural to assume her power and techniques were not gifted to her but attained out of sheer necessity.

Remilia once recommended that Sakuya should gain immortality by ingesting a person of Hourai's liver, but she refused, opting to remain human. Why did she refuse to live alongside her master for all eternity? Why does she carry silver knives when they're known to be capable of inflicting mortal wounds on vampires? The answers to those questions would undoubtedly shed light on the rumors about Sakuya being a vampire hunter before arriving at the Scarlet Devil Mansion.

Perhaps she refused because, as a vampire hunter, she sees vampires as the enemy and couldn't bare to join them in immortality. Or perhaps she refused as a form of penance for her past actions. Regardless, only Sakuya knows the truth, and there are still secrets in her heart that even Remilia cannot touch. What does Sakuya see as she stares down at the red, glistening cherry pie in her hand? The day may yet come when she shares the truth of it all.