Former actor Mito Yusuke has spent years searching for the truth behind the mysterious death of his beloved wife, a teacher at the prestigious private boys’ school Mankai Academy. Believing her death is connected to an incident she had been investigating, Mito conceals his identity and infiltrates the school as a teacher. There, he meets transfer student Toyama Takumi, who has also begun to sense that something is wrong within the academy. Together with members of the drama club, they become entangled in mysteries involving the school’s hidden past, its student council, and the chairman’s powerful family. Using their theatrical skills to uncover clues, they set out to expose the secrets buried within Mankai Academy and the forces determined to keep them hidden. Native Title: 仮面教師～妻を亡くしたその日から Also Known As: Kamen Kyoshi: Tsuma wo Nakushita Sono Hi kara , Kamen Kyoushi: Tsuma wo Nakushita Sono Hi kara