My Hero Academia would not be what it is without the existence of quirks. This anime emphasizes the existence of quirks and how they have made their world a superhero world where good people and villains exist. Other than the baby that lit up in Qingqing City, China, there is no other known case of a manifested quirk. After the light-up baby, quirks started manifesting, and as an unknown phenomenon, it is not unusual that scientists have taken up the responsibility of researching the superhuman ability that almost 80% of the individuals living in the My Hero Academia world have.