Mahoutsukai Tai! OVA  

Magic User's Club OVA

On a sunny day, extraterrestrial beings arrived from outer space. Unlike the stereotypical portrayal of little green men or girls in school uniforms, they were unattractive robotic creatures who effortlessly overpowered the United Nations forces within moments. Following their victory, these invaders, referred to as "eyeballs," traversed the Earth observing human society. Despite being generally peaceful, they would retaliate if provoked. The eyeballs adhered to all traffic regulations and were courteous in their interactions with humans. However, due to their alien origins, people on Earth desired their departure. In response, the Kitanohashi High School Magic Club took it upon themselves to vanquish these malevolent robots and liberate humanity from their presence.