Dusk Maiden of Amnesia

Synopsis

Seikyou Academy is a school which has been established for sixty years, and it has undergone multiple renovations over the course of its history. Because of this, the school was turned into a labyrinth of stairs, hallways and unused classrooms, which eventually become an inspiration to the students to create ghost stories. Teiichi Niiya, a first year middle school student of Seikyou Academy, becomes lost after roaming the school's vast complex of buildings. To his surprise, he meets Yuuko, who introduces herself to be the "Ghost of the Old School Building", one of the seven most famous ghost stories of the school (also known as the "Seven Mysteries of Seikyou Academy"). After listening to Yuuko's story of becoming a ghost and losing all of her memories, Teiichi vows to help her discover her life and death. He eventually gathers a group of students to help solve the Seven Mysteries of Seikyou Academy, which turns out to be interconnected to Yuuko herself.