Hell Teacher Nube: 0 a.m. Nube Dead

The anime introduces Jun, a new student in Nube's class, distinguished by his profound love for clowns. Jun's only companion is Pierre, a clown he sees reflected in his mirror. One fateful night, Pierre bestows upon Jun a mask imbued with unusual abilities. Following this, Jun's demeanor undergoes a drastic transformation. Simultaneously, a series of inexplicable accidents begin to plague the school. The narrative centers on the unsettling connection between Jun's altered state, the mask's influence, and the escalating chaos within the school environment. The story explores themes of loneliness, the allure of the unknown, and the potential dangers of embracing the uncanny.