"My Hero Academia is set in a world where about 80% of the human population has gained superpowers called "Quirks" (個性, Kosei) as a result of recent human evolution. Quirks vary widely and have the possibility of being genetically inherited, with the series' focal Quirk "One for All" being the only one that can be passed on without heritage. Most Quirks are generally small in scale, but some exhibit near god-like ability."