2042 - A glowing baby is born in Qing Qing, China. News of the 'Luminescent Baby' becomes a thing of international curiosity.
2047 - In a Japanese Ghetto, rumors start to spread of a 'horned devil child' killing anyone he sees.
2050s - 2080s - The first generations of people with superhuman powers reach maturity. Chaos erupts all across the globe, leading to societal upheaval, smaller wars in pockets around the world, and technological stagnation as the first generation of supervillains start making their presence known.
In order to bring some sense of stability to the world, superhumans with more altruistic natures take inspiration from fiction and become costumed superheroes/vigilantes to combat the chaos unfolding around them.
Rumors start to spread in the 2060s of a man who can give and take meta-abilities, but most don't believe it.
In the mid-2070s, a battle for the future of Japan takes place in the shadows.
2079 - The word 'Quirk' becomes integrated into the global lexicon after a woman named Fumie Yotsubashi uses it to describe her son's superpowers. Quirk becomes the name for superhuman abilities, and the genome that causes them to be retroactively labeled as the Q-Factor.
2097 - Across the globe, the governments of the world establish the Hero System, ensuring cooperation between superpowered heroes, law enforcement, and rescue operations. More legislation soon follows, leading to numerous peace treaties to prevent mutually assured destruction and quirk registration to prevent unexpected catastrophe.
2104 - Yuko Yasuda becomes well-known in the robotics community for her ground-breaking work in the field.
2105 - Chikara Yotsubashi, now an adult and taking on the name Destro, founds the Meta Liberation Army in an attempt to upend any current superhuman laws and stop more from being made.
The National Jinkai is founded, acting as a mouthpiece for the MLA's ideology.
2114 - With crime on the rise thanks to the spreading of Destro's rhetoric, the Japanese government contracts Yuko Yasuda to build robots designed to aid the police and military in maintaining order. The first of these 'Zen-Bots' are rolled out in the winter of that year.
2135 - The citizens of Ferika, Japan are massacred in the middle of the night. An investigation reveals the culprits are the infamous supervillain group known as Oni Army. A large collection of military, heroes and vigilantes destroy the Oni Army in retaliation for what would become known as the Ferika Massacre.
Later that year, Yuko Yasuda is killed when an accident causes her lab to explode.
2136 - With the arrest of Destro, the MLA is thoroughly destroyed. The National Jinkai is quick to cut ties with Destroist philosophy and manage to transition into a regular newspaper.
2137 - Destro commits suicide in prison. After his death, his biography Meta Liberation War is published and continues to be a controverstial piece of literature.
2162 - Toshinori Yagi is born.
2184 - A massive fire breaks out in Tokyo, causing an increibly amount of devastation. But when all hope seems lost, a young hero manages to save hundreds of people on his own and put out the massive flames. When asked his name, the young man says that he is All Might.
2185 - Technological Prodigy David Shield brings together the best and brightest minds on the planet to created an artificial island, hoping to break humanity out of its technological stagnation. This is later known as I-Island.
Late 2180s-2190s - All Might becomes an international sensation, traveling all around the world and aiding local heroes with all manner of supervillains. His actions and the actions of heroes following in his footsteps bring a sense of optisism and hope. For his heroic deeds, All Might is dubbed as the 'Symbol of Peace.'
2200 - Izuku Midoriya and many other children are born at the turn of the century.
2215 - Current Day