1. The My Hero Academia spin-off manga, "My Hero Academia: Vigilantes," is finally becoming canon. This means that the events and characters from the spin-off will be officially recognized and integrated into the main My Hero Academia storyline. Fans have been eagerly anticipating this development, as the Vigilantes manga has introduced several popular characters, including Koichi Haimawari, who has become a fan favorite.

2. The article mentions that the integration of Vigilantes into the main My Hero Academia canon will likely occur through the upcoming "My Hero Academia: World Heroes' Mission" film. This suggests that the film may serve as a bridge between the two narratives, allowing for the introduction of Vigilantes characters and storylines into the main series. Fans are excited to see how this crossover will be executed and how it will impact the overall My Hero Academia universe.

3. The article also highlights the significance of Koichi Haimawari, the protagonist of the Vigilantes spin-off, becoming canon. Koichi's journey as a "Quirkless" individual who still finds ways to help others has resonated with many fans, and his inclusion in the main series is seen as a welcome and long-awaited development. Fans are eager to see how Koichi's character and storyline will be integrated into the larger My Hero Academia narrative.