We have the first teaser for the 3rd season of the anime World Trigger. According to the official website, the series will premiere on Japanese TV on October 9th.
Check it out:
Synopsis:
In the anime's storyline, Earth has been invaded by little-known creatures called "Neighbors," and to combat them, the Border Defense Agency was created, utilizing alien technology. The protagonist, Osamu Mikumo, isn't the best agent, but he strives and does everything he can to defend planet Earth.
Finally, the manga World Trigger by author Daisuke Ashihara was launched in 2013 in Weekly Shonen Jump, and soon after it received two seasons from Toei Animation.