2030 - First Quirk User born, thousands more follow
2035 - Operation Olympus founded to study the children born with quirks
2040 - hundreds of thousands of children have been born with quirks around the world.
2050 - First Quirk-related crime committed, several banks robbed a Quirkless police officer killed.
2051 - Quirk Divisions founded to combat Super Criminals, later dubbed "Super Villains"
2075 - More individuals alive in the world with quirks than those without.
2090 - Heroes are syndicated into professional agencies that manage the heroes and provide them with insurance and legal protections.
2100 - U.A. High School founded as an institution to train up the next generation of hero, more schools open worldwide.
2150 - Present Day