Asura Cryin

Natsume Tomoharu, a high school student, is accompanied by the ghost of his best friend, Misao. After moving into his brother's old house, Tomoharu finds a mysterious, locked briefcase. Groups of people invade his house in search of the briefcase, prompting Tomoharu and Misao to try and escape with it. The briefcase has drawn them into a situation where they must uncover its significance and the connections it holds to Misao and its potential global impact.