Influenced by his father, the protagonist Kazuya Okinoshima once aimed to become a lawyer, but gave up along the way. With no dreams left, he ended up working as a teacher at the private high school Arisugawa Gakuen. Kazuya is what one might call a “reset man”, someone who can never see anything through, giving up the moment things get difficult. One day, a figure calling himself an angel, Yoshimi Tendo, appears before Kazuya and declares his death. At the same time, one of Kazuya’s students, Ayumi Todo, begins to show disturbing behaviour… The series ran for 12 episodes, with an average viewer rating of 13.2%. Produced in high definition. To distinguish it from the MONO Company Arc, the home video release carried the title Teacher Arc. Unlike the MONO Company Arc, this version was created with a more serious tone. While there is no direct connection to the previous work, the final episode reveals Tendo’s true identity, providing a conclusion for the entire series.