Dusk Maiden of Amnesia - S01

Seikyou Private Academy is built around the intrigue of traditional occult myths, and it carries a dark past. For 60 years, it has been haunted by a ghost named Yuuko, a young woman who mysteriously died in the basement of the old school building. With no memory of her life or her death, Yuuko quietly finds and leads 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.