Anime started from Jan/2022.
It's an anime adaptation of a popular manga, following the 1st season (Apr-Sep/2013, 25 episodes), the 2nd season (Apr-Jun/2017, 12 episodes), the 3rd season (Jul-Oct/2018, Apr-Jul/2019, 22 episodes), the 4th season Part 1 (Dec/2020-Mar/2021, 16 episodes), and now the 4th season Part 2.
The manga has already been completed in May 2021 with a total of 34 volumes, and the anime is also in its final stages.
A man-eating giant suddenly appeared in front of humanity. As the story progresses, it becomes clear that they are not the enemy of humanity, but rather a product of the struggle between man and man. In this season, the deep-rooted national and ethnic struggles are depicted from the point of intensification.
It seems that there are only 5-6 volumes of manga to go for animation, so it will be interesting to see if the story will be told until the end of this season.
