**Examples:**

* **Mark + Debbie and Nolan (Invincible) -** Nolan killed thousands of innocent people, beat Mark to a bloody pulp, and called his mother a "pet." This caused Mark to feel intense trauma and constant psychological anguish. While Mark still loves his father, he can't ever forgive him. Debbie also doesn't forgive him at all. This is a drastic change in the comics where Mark forgave Nolan when they reunited, and Debbie did too. 
* **Steven and the Diamonds (Steven Universe) -** The Diamonds destroyed entire worlds and hunted Steven and his family like animals. He only needed them to cure all the corrupted Gems**;** after that, he was through with them and only tolerated them to stop them from going back to their old ways. In one case, he nearly shatters White Diamond as a form of payback.
* **Endeavor and Shoto + Natsu (My Hero Academia) -** Endeavor neglected Natsu and Fuyumi and drove Touya into near suicide; he also physically abused Shoto throughout his pre-teens. After seeing Shoto use his fire side for the first time, Endeavor realized the pain he caused his family and drove to not only atone for his sins but also to become someone Shoto can be proud to call "father," even if Shoto never forgives him. Natsu, on the other hand, refuses to forgive Endeavor, but Endeavor doesn't mind so long as he can make Natsu happy. The Todoroki family drama is a lot like the first example, which I really love. 
* **Eren and Reiner (Attack on Titan) -** Ok, maybe this one is a little pushy, but Eren doesn't fully forgive Reiner. Regardless of >!Eren manipulating timelines to ensure his mother's death,!< everything that happens to Eren is still in part due to Reiner. While Eren can sympathize with Reiner, considering he just wanted to go back to his mother, something Eren of all people can 100% sympathize with, he doesn't forgive Reiner. It's just that by this point in the story, Eren is too depressed to care about revenge or personal vendettas, so he tolerates Reiner as an obstacle. 
* **Todd and Bojack (Bojack Horseman) -** Todd was a high school dropout that Bojack let crash with him, not out of altruism, but because Todd made Bojack look good by comparison, and Bojack constantly demeaned Todd so that he wouldn't leave. However, eventually, Todd actually does start improving himself and making a name for himself, and Bojack tries to bring Todd down, each time he apologizes, but they're half-assed apologies. Bojack keeps making promises to be better, but each time he breaks that promise to the point where Todd no longer forgives Bojack, and the two keep their distance until the end of the series. 

[Loved Trope] "I don't forgive you, I tolerate you"