The Fox Doppelganger TVD

The world moved on as they silently forget an entity named Katharina Petrova. Elijah knows he has children that were taken from him by someone. Jeremy lost the connection to the necromancy magic that was keeping him alive and he just dropped dead in the middle of his living room. By a sheer will of luck, he was brought back when the other side started collapsing. 

Damon and Bonnie did not make it back and were instead transferred into one of the many prison worlds under a strong coven of witches. Elena had lost the magic artifact after her death just like Bonnie. The artifacts will disintegrate to dust upon the death of their host. 

This was to prevent these items from falling into the wrong hands. Elena can now be compelled, she asked Alaric who had come back as an original vampire to erase Damon's memories from her mind. 

Caroline who had left Mystic falls came back when she found out about Bonnie returning from the prison world. She couldn't speak to Stefan even as he tried to apologize to her. When the time came and Damon brought back his mother from one of the prisons, Caroline killed her just as Stefan met her and said a few words to her. 

Caroline then said to Stefan. "Now I forgive you." Damon wanted to kill Caroline but Elena, Bonnie, and even Stefan protected her. Caroline then stayed home but then she got pregnant with a set of twins that belonged to a now human Alaric and a diseased witch. 

When the new family of powerful vampire witches tried to hurt her, they were visited by Nate who is very powerful and well protected from magic by his tattoo. He poisoned them with something that required a monthly antidote. It would keep them in line while Caroline is pregnant. 

Katherine inside the dark world navigated the space. The rope she had tied around Clark is cut off and she was not able to pull the man inside with her. She hoped he would forget about her with the rest of the world. 

The originals faced a multitude of enemies and had to separate, Elijah went to find his children. Elijah did not waste time leaving to find his children. 

At first Nadia refused him but when it became apparent that he is not going anywhere, she gave him what Katherine had left behind for him. Her wedding ring. 

When his breath wrapped around the ring, his memories of Katherine came back. A letter was then given to him. After reading it, he knew she would ready do anything for her children just like she had told him long ago. He then took on the role of a father and raised his kids. 

Katherine had hoped for something like this to happen but she was not very optimistic. Elijah turned out to be a good father. He decided not to tell the rest of his family about the existence of his children to protect them. He had met them before but his family had not, only Mikael has met them and he is dead now. When Katherine was erased from the world they wouldn't remember her kids. 

Nadia stayed near the pack while Elijah and the children would visit once in a while to check up on them. The nine tails stayed with the kids and Elijah against his wishes. They ended up buying a large house and living together like that. 

When the kids moved to boarding school, he fell in love with a woman of mysterious origin. He remained involved in his children's lives but still kept their existence a secrete even from his lover. Or it is safe to say he tried and when he was caught he said he had adopted them. 

The kids went to the same school as their cousin Hope Marshal.