Ep 9. Deep Blood (Vampire Killer)

In A Certain Magical Index season 1 episode 9, titled Deep Blood (Vampire Killer), the story focuses on Kanzaki Kaori, a swordswoman from the Amakusa Church, who comes to Academy City searching for her friend and fellow Church member, Tatemiya Saiji. As she begins her search, she encounters Touma Kamijou, the protagonist of the series, and his friend, Mikoto Misaka, who are investigating a series of bizarre murders that have been taking place in the city.

The victims of the murders are all Level 0 espers, but what's more unusual is that their blood has been drained entirely from their bodies. The investigation leads them to the discovery that a vampire is responsible for the murders. The team soon realizes that the vampire is no ordinary one, as it is able to control other people's minds and use them to commit the murders.

As Kanzaki joins forces with Touma and Misaka, she reveals that she is a specialist in dealing with vampires, having been trained in her church to be a vampire killer. Her skills prove to be invaluable as they track down the vampire, who turns out to be someone they least expected.

The episode offers a closer look into the Amakusa Church, a religious organization in the world of A Certain Magical Index. While they may not have the same level of power as the more notable factions such as the Science Side or the Magic Side, they have their own unique strength. As Kanzaki explains, the Amakusa Church is a group of Christians who had to hide their faith from the rest of the world, so they developed a way to incorporate their beliefs into their fighting style.

The episode also gives more insight into Kanzaki's character, as she is shown to have a deep sense of loyalty towards her friends. Her determination to find Tatemiya Saiji shows the audience that she is not one to give up easily, and that she will do everything in her power to protect those she cares about.

Overall, A Certain Magical Index season 1 episode 9, Deep Blood (Vampire Killer), offers an exciting and action-packed installment in the series. The exploration of the Amakusa Church and the introduction of a supernatural element in the form of a vampire makes for an interesting and fresh take on the show's world. Kanzaki's appearances are always a highlight, and her expertise in dealing with vampires is a welcome addition to the team's skillset. With plenty of twists and turns, this episode is sure to keep viewers on the edge of their seats.