New teacher "Kenta" becomes the homeroom teacher of "Class 6 Z". However, Class Z is the worst class in history, with children who didn't get used to the class and problem children, and on top of that, Taeko was the only student attending school. Kenta, who came to her secret place with Taeko, the only student, happened to be under the "Yggdrasil" that the Vulture group was transporting, and became a wooden human. In this story, Kenta, a useless teacher, becomes a wooden hero, "Woody Kane," and fights as a hero for his students.