In the final season of Attack on Titan, Jik and Ellen are forced to separate after returning to Paradi Island. Then Allen staged a coup d'état and the Jaegers rose.
However, Marais came quickly and came with a large army to kill Alan. Jik was also on the other side with Revere. In order to meet Alan at the agreed time, Jik decided to blow himself up.

After that, I'll leave it to my brother
Jike was lucky enough to survive and quickly rushed to Alan's side. Alan's side was also very hard, and he had shouted before to let Jik know his place.
Jik arrives just in time to save Alan and separate Reiner's armored giant from Alan. Then Jik looked very distressed about Alan.
After working hard for Alan for so long, "after that, I will hand it over to my brother", what a touching brotherhood, I was almost moved to tears.
Step by step, Alan walks towards Jik, who is responsible for cleaning up the enemies around him. It can really be said that brothers are in the same heart, and their profits are broken.
Both of their brothers have one thing in common, they have a lot of hearts and eyes, and they have used all the people and things they can use, otherwise how can they be called the Jaeger brothers.
However, Jik does not take advantage of his beloved brother, he sincerely hopes that Ellen can be redeemed, and Jik himself is a person who values family affection.
So Jik is 100% sincere to Alan, has such a good older brother, you say the younger brother can not be satisfied?
Chairman Ai didn't think so
Alan, of course he was satisfied, had an older brother who trusted him completely, who would not be satisfied. It's just that Jik treats Alan as a younger brother, and Chairman Ai doesn't necessarily treat him as a brother.
If Jik has 800 eyes, then Chairman Ai has 801 eyes. Jik has no heart for Alan, but Ellen uses Jik as a tool man.
From the beginning to the end, he only wanted to use Jik, jik wanted to carry out the euthanasia plan, right, Chairman Ai deliberately acted in front of him with the same goals as him.
Jik was mistaken for Alan and he were the same person, and it was because of this, plus Alan was his brother, that Jack never suspected Alan.
But if he had an extra eye for Alan and guarded against him a little, he would not fall into such a miserable end in the future.
Jik was really miserable
Jik did not have a good childhood, and was forced by his parents to learn the real history of the Marais during the day and to learn the real history at night.
He didn't have a happy childhood, still a crane tail. The former Beast Giant was his only salvation, and he would have to serve as the Shadow Emperor on Marais's side.
It was hard to find a brother here, he was sincere, but Alan made him a tool man. Originally he thought that Alan, like him, was poisoned by his father.
It turned out that Alan had a very happy childhood, not as painful as he was, and he was not schizophrenic.
Excluding what Jik did in Paradi Island, he was impeccable, especially when it came to treating Alan.
Unfortunately, he was played by Ellen as a monkey, and you said that it was not a coincidence that Jik was a monkey. Finally King Gigi realized this and voluntarily went to his death, so that he could be a miserable brother.
Chairman Ai is indeed a little ruthless, for the sake of Mikasa and Armin, Mom, Dad and brother don't want it, just to save the two of them.
You say that Chairman Ai is ruthless, he thinks so much about Mikasa and Armin, you say that he has affection, he can even use his own relatives. "Reiner, why do you think the giants ate my mother that day?"