Nightwalker: The Midnight Detective (1998)

The story centers on Keitarou Gentouga, who has the ability to be a spirit medium. In junior high school, he got someone else wrapped up in a spirit possession incident, and he has been a shut-in for more than two years. As he reintroduces himself to society as a private tutor, he meets a genius girl named Yayoi Houzuki. Yayoi is instantly able to tell that Keitarou has skill as a spirit medium, and she invites him to go with her to a haunted location. The two then start their journey capturing evil spirits.

Rin Asōgi may look like an ordinary office lady on the outside but she is actually a private investigator taking on any jobs, from finding a stray cat to infiltrating a high-security corporate lab. What's more, she appears literally indestructible, supernaturally healing any injuries and mutilations. Together with her partner Mimi, Rin delves into the darkest secrets of the society but the ones she hides herself are by far more sinister...

In this world, creatures like vampires and werewolves still walk about, but Aya Rindo can’t say the same for herself. This beautiful disembodied head, carried by her maid Shizuku Hasei, is a detective in search of her stolen body. One evening, they meet half-human Oni Slayer Tsugaru Shunichi, who offers a lending hand. Now, the trio is traveling through Europe, solving mysteries along the way.

It’s 1923, and the mysterious blood source Ascra has unleashed a horde of vampires across Japan. In response, the government spawns Code Zero. With S-rank vampire Defrott and the rookie Kurusu, this kill squad is made for one reason: to hunt the undead!

When a series of animal bodies that rot away after a single night begin appearing in a remote mountain village, Inugami, a detective from Tokyo who specializes in the occult, is called to investigate. While working the case, he befriends a strange boy who works in the field every day instead of going to school. Shunned by his peers and nicknamed “Dorotabo” after a yokai that lives in the mud, he helps Inugami uncover the truth behind the killings — but supernatural forces are at work, and while Dorotabo is just a nickname, it might not be the only thing about the boy that isn’t human.

The beautiful and successful supermodel Jun Fudou meets a woman named Lan Asuka, who confronts her with a werewolf monster, which she calls a devil beast. As a result, unimagined powers awaken in Jun, and she manages to defeat the monster. She, just like this werewolf, is part of the next step in human evolution: humans who can mutate into beast-like monsters and then mercilessly terrorise civilisation. Unlike the other devil beasts, however, she can retain her humanity, which is her undoing because Lan Asuka is a high-ranking employee of the government and of the “Anti-Beast Special Squad”, which wants to abuse her powers and train her to mercilessly hunt down her own species. Caught between these extremes and her weak self, the question arises: what fate will Jun meet? Will she ever be able to decide it for herself?

Many centuries ago, man's Armageddon gave birth to the vampires' wrath. As man and immortal clash, a reality-shattering threat looms. Hope resides solely in a new breed of hunter operating under the Vatican's authority. The true battle between holiness and evil has begun.

Sotobamura is a small village with around 1300 residents; so small the village isn't even connected to a single highway. An isolated village in which old customs, such as the burial of the dead, are still practiced. One day, the bodies of three people are found dead. Although Ozaki Toshio, the village's lone doctor, feels uncertain, he treats the deaths as a normal occurrence. However, in the days following, the villagers start to die one after the other.

Spurred by the flame raging in his heart, the Black Swordsman Guts continues his seemingly endless quest for revenge. Standing in his path are heinous outlaws, delusional evil spirits, and a devout child of god. Even as it chips away at his life, Guts continues to fight his enemies, who wield repulsive and inhumane power, with nary but his body and sword—his strength as a human.

Humanity has found a way to achieve infinite energy by using coils to draw it from the fourth plane: dimension "W". With the production of coils having been monopolized by the New Tesla energy company, freelance collectors are hired to find and remove any illegal, unofficial coils. This is the story of collector Kyōma, who also happens to have a huge hatred towards coils. During one of his missions he stumbles upon a female android that perceives herself as being human, leading the two to enter an unlikely partnership.