In the manga, Mikasa's story doesn't have a traditional romantic ending. Her relationship with others is complex and not centered around a romantic partner. She's primarily driven by her loyalty and duty towards Eren and her comrades.
In the manga, Eren and Mikasa don't have a romantic ending together. Their relationship is complex and goes beyond traditional romance. The story focuses more on larger themes and plot developments rather than a conventional pairing up of these two characters.
I recommend "Quit Deadly Lover (Complete Version)". The female protagonist of this modern romance novel is smart and wise. She's not a weak female protagonist, nor is she a female protagonist who still loves the male protagonist in the end. In the story, the male protagonist was a typical black-bellied man. He was scheming and full of predatory nature. He had a crazy ambition for the female protagonist to pursue power. There were many heart-wrenching scenes, but the female protagonist did not choose to continue to love the male protagonist. Instead, she found her own career and growth. I hope you like this fairy's recommendation. Muah ~š
The story might take a more somber turn. Snape could become more withdrawn and focus solely on his own pursuits. For instance, he may throw himself into his potions research even more intensely.
One reason could be exhaustion. Naruto has been through a lot in the original story. In a fanfic, if he is continuously put through more and more difficult situations without proper breaks, he might just give up out of sheer tiredness.
The story could take a dark turn. Without his heart, Naruto might become a soulless being, and his friends would be devastated. They might try to find a way to get his heart back. Maybe they search for a powerful sage or some ancient magic that could reverse what has been done.