The Three Great Hero Magics are said to be three nigh-absolute magics that said to be able to kill God-Level Mysterious Beings in a instant. Due to the power said these possess, the Hero Association had banned these magics, and can only be used if an God-Level Threat is present. These magics are passed down from generation to generation in a group of family called the Hero's Family, which is said to be lineage of mages that protected the world from supernatural threats long before the creation of the Hero Association.