Seikyou Private Academy, built on the intrigue of traditional occult myths, bears a dark past—for 60 years, it has been haunted by a ghost known as Yuuko, a young woman who mysteriously died in the basement of the old school building. With no memory of her life or death, Yuuko discreetly finds and heads the Paranormal Investigations Club in search of answers. A chance meeting leads Yuuko to cling to diligent freshman Teiichi Niiya, who can see the quirky ghost, they quickly grow close, and he decides to help her. Along with Kirie Kanoe, Yuuko's relative, and the oblivious second year Momoe Okonogi, they delve deep into the infamous Seven Mysteries of the storied school. Tasogare Otome x Amnesia tells a unique tale of students who work together to shed light on their school's paranormal happenings, all the while inching closer to the truth behind Yuuko's death. [Written by MAL Rewrite]

The world of dreams can be an incredible window into the psyche, showing one's deepest desires, aspirations, and repressed memories. One hopeful tech lab has been developing the "DC Mini," a device with the power to delve into the dreams of others. Atsuko Chiba and Kosaku Tokita have been tirelessly working to develop this technology with the hopes of using it to deeply explore patients' minds and help cure them of their psychological disorders. However, having access to the deepest corners of a person's mind comes with a tremendous responsibility. In the wrong hands, the DC Mini could be used as a form of psychological terrorism and cause mental breakdowns in the minds of targets. When this technology is stolen and people around them start acting strangely, Atsuko and Kosaku know they have a serious problem on their hands. Enlisting the help of Officer Konakawa, who has been receiving this experimental therapy, they search both the real and dream worlds for their mental terrorist. [Written by MAL Rewrite]

Saya Otonashi is a seemingly ordinary girl living a mundane life with her adoptive family in Okinawa City. In fact, her only peculiarities are suffering from anemia and being unable to remember any of her life beyond the previous year. However, Saya's forgotten past quickly comes back to haunt her—one night, she is attacked at school by a creature that feeds on human blood. Just when all hope seems lost, a mysterious man named Haji appears and fends off the creature temporarily. But when her rescuer forces her to drink his blood, Saya suddenly enters a trance and slays the monster with ease, using her own blood as a catalyst. Saya then learns of an organization named Red Shield, founded for the sole purpose of defeating the hellish beasts. Now Saya and Haji must work together with Red Shield to fight these fearsome monsters and unlock the secrets to the girl's past. [Written by MAL Rewrite]

Hellsing, an organization specializing in dealing with supernatural threats, is called in to eliminate a vampire that is turning the villagers of Cheddar into ghouls. To put an end to this, the leader of the organization, Sir Integra Fairbrook Wingates Hellsing, dispatches her most formidable asset: a powerful vampire known as Alucard. Armed with only a single handgun, Alucard wreaks havoc on the monsters plaguing Cheddar. However, a young police officer, Seras Victoria, gets caught up in the chaos and becomes mortally wounded as a result. Taking pity on the girl, Alucard gives her a choice: die as a human or live on as a vampire. Seras accepts his offer and begins a new life as a member of Hellsing. Though it was her decision, Seras struggles with the fact that she is no longer human. Nevertheless, she must embrace being a creature of the night soon if she wants to survive on the front lines in the fight between humans and the supernatural. [Written by MAL Rewrite]