Saku made a name for himself as the music unit "Sakutasuke" and everything seemed to be going well. However, Keishi Higashimoto, who has been watching the world so far, receives a notice from the "government" that "School District 7 will be closed and the worldview will be renovated." This is in view of the current situation where users who watched over "actors" in the form of white people and cats are away from School District 7. Katsura pins his hopes on Saku's success in the singing contest...