Vampires cannot be harmed by conventional means, so what does Anko hope to accomplish by shooting them out in the open? Ko suspects there's a method to her madness.
Kou and Nazuna visit Kabura's hospital to investigate the haunted Room 307 and uncover clues about Nazuna's past. Inside, Nazuna finds a photo of herself in a nurse's uniform with Kabura and a patient.
Who is "Nanakusa Haru," deeply connected to Kabura's past? As Kabura reveals the truth about Haru, not only will the circumstances under which Kabura became a vampire be revealed, but the secret of Nazuna's birth will also be revealed.
Vampire-hunting detective Anko attacks Akkun but retreats with help from Seri and Hatsuka. The group learns a key weakness: vampires are vulnerable to personal items from their human past-and begin planning their next move
When Ko finds the diary of a girl called Kyoko, he discovers that he wasn't Nazuna's first human friend. Nor the first person she ever considered turning...
Mahiru meets a mysterious woman named Kiku and becomes close with her, but Kou discovers her true identity. Kiku hesitates but finally confesses the truth to Mahiru. Later, Kou hears about Kiku's past from Nazuna and his suspicions deepen.