The fanfic could start with Naruto sensing an unusual presence. It turns out to be a succubus. At first, she might be a threat to Konoha as she preys on the villagers at night. Naruto decides to confront her. However, during their interactions, he discovers that she has a sad past. So, instead of vanquishing her, he helps her reform and she becomes an ally of sorts, using her powers for good in the village.
One possible plot could be that Naruto, in his journey, stumbles upon a succubus. The succubus might initially be attracted to Naruto's strong chakra. She could try to use her powers on him, but Naruto, being Naruto, resists with his determination. Maybe he tries to understand her instead of immediately fighting, leading to an unlikely friendship.
Well, in a Naruto meets a succubus fanfic, the plot might revolve around the succubus being sent to disrupt Naruto's world. But Naruto, with his pure heart, might see through her tricks. He could then try to help her find a better way, like teaching her about the value of positive emotions rather than just draining energy from others.
Naruto would react with his usual enthusiasm. He'd see the succubus as someone he could potentially help or befriend. He might not fully understand what a succubus is at first, but his kind nature would lead him to approach her without fear. As for Kakashi, he'd be more guarded. He'd analyze the situation carefully before making any moves, while also keeping an eye on Naruto to make sure he doesn't get into too much trouble.
In a 'Naruto meets a succubus' fanfiction, Naruto might initially be confused by the succubus's presence. He could mistake her for an enemy at first. But as the story progresses, he might discover that she has her own motives that are not entirely malicious. Maybe she's drawn to his strong chakra.
I'm not entirely sure specifically as there could be many different takes on a 'Naruto the succubus fanfic'. It might involve creating a unique story within the Naruto universe where a succubus character is introduced, perhaps changing the dynamics among the characters, and creating new adventures or relationships.
One possible plot could be that Naruto gets lost in a strange land where Konan is the protector. They meet, and at first, Konan is wary of Naruto as he's from Konoha. However, as they interact, they discover they both have a strong desire for peace in the ninja world. So, they work together to bring about a truce between their respective groups.
One possible plot could be that Naruto accidentally travels back in time and meets Shisui. Shisui, seeing Naruto's potential, decides to train him in some of his unique jutsu. This would give Naruto an edge in his future battles and also a new perspective on the Uchiha clan.
Well, the plot could involve Naruto and Meliodas teaming up to fight a common enemy. Maybe an evil force that threatens both their worlds. Naruto's ninja skills and Meliodas' demon powers would make for an epic combination in battles.
One possible plot could be that Naruto goes on a special training journey with Jiraiya again, but this time they encounter a new and powerful enemy that has a connection to Jiraiya's past. Naruto has to learn a new jutsu from Jiraiya to defeat this foe.
One possible plot could be that Naruto is somehow sent back in time and meets his mother Kushina. He gets to know her as a person, not just as the mother he never really knew. They could train together, and Kushina could share some of her unique Uzumaki clan techniques with Naruto.
To be honest, I don't know of any particular 'naruto the succubus fanfic' that is widely known as popular. Fanfic popularity can be quite subjective. Some might find a story with this concept appealing if it has great characterizations, an engaging plot, and good writing. But without more research, it's difficult to say if there are popular ones specifically with this title.
A plot could be that a succubus is sent to the Naruto universe as part of a deal between dark forces. She targets Naruto because of his growing power. But as she gets closer to him, she starts to feel real emotions for him instead of just using him for power. This creates a conflict within her as she has to choose between her original mission and her new - found feelings.