Another one is 'The Demon Lord is New in Town'. It has elements where the main character is in a position of great power, similar to the concept of being the final boss in 'I'm the Final Boss Novel'. It shows how they deal with the world around them while being in such a powerful position.
There's 'The Overpowered Newbie in Another World'. Just like 'I'm the Final Boss Novel', it features a main character with extraordinary abilities. The main character in this novel has to navigate a new world where they are stronger than most, much like the final boss - like character in the other novel.
I'm not sure about the specific plot as I haven't read it. But generally, it might be about a character who is not in a relationship with the final boss in a fictional world, perhaps involving adventures, self - discovery, and interactions with other characters in that world.
The plot could involve the protagonist navigating a world where there is an expectation or assumption that they should be involved with the final boss in some way, perhaps romantically. However, they resist this and instead pursue their own path. This could involve making alliances with other characters, uncovering secrets about the world or the final boss that change the whole dynamic of the story, and facing challenges that come from going against the norm.
One great 'final boss novel' is 'The Lord of the Rings' trilogy. Sauron is the ultimate final boss there. His power and the threat he poses drive the entire story.
I recommend the following two novels to you. They are "The Rebirth of the Special Police: This Concubine Is Not to Be Trifled With" and "The Return of the Dominator". Both novels were about the protagonist being reborn and possessing a waste's body to start his life anew. Among them,"Special Police Rebirth: The Concubine Is Not to Be Trifled With" was an ancient romance novel. The protagonist was a modern special police officer who was reborn as Miss Seven, who was bullied by the entire mansion. However, she was not useless and would fight back against those who bullied her."The Return of the Dominator" was a fantasy novel. The protagonist was a modern special agent who was reborn as a useless son-in-law. However, he was discovered to be the disciple of the President of the Guild of Magic and gradually became a strong person. Both novels have the protagonist's counterattack after his rebirth and the sweet love between him and the male protagonist, which is very suitable for your question. I hope you like this fairy's recommendation. Muah ~😗
One interesting aspect could be the unique plot concept. Instead of the typical story where the protagonist falls for the final boss, this novel takes a different turn. It might explore different character dynamics and relationships that are not commonly seen in similar stories.
The main character is obviously the one who is proclaiming 'I'm not the final boss' lover'. This character is likely to be complex, with their own motives, desires, and a backstory that explains why they are in this situation. The final boss is another key figure. They may be a powerful, mysterious, and perhaps feared entity. There might be other characters like a mentor - like figure who guides the main character in their journey to clear their name. And there could be a love interest for the main character, someone who truly understands them and stands by them, not related to the false idea of being the final boss' lover.
Since I haven't read the novel, I can't say for sure. But there must be a protagonist who is the one not in love with the final boss. There could also be the final boss as a significant character, even if not in a romantic way. And probably there are some supporting characters like friends or family of the protagonist.
The unique concept of being the final boss. It flips the typical narrative where the hero battles the final boss. Here, we see things from the final boss's perspective, which is quite fresh.
I'm not sure exactly as I haven't read the novel in full, but typically there would be a protagonist who is not the final boss lover. There may also be a character who is presented as the final boss, even if the relationship is not a romantic one.
One similar novel could be 'The Burning Sky'. It also has elements of intense action and a world on the brink, much like 'the final fire novel'.