A third option is a fanfic where Anko is under a genjutsu that makes her see Naruto as an enemy. Naruto has to find a way to break the genjutsu without harming Anko. He tries to reach out to her using their shared experiences and memories, which leads to a deeper understanding between them once the genjutsu is broken.
Another plot could involve Anko on a mission with Naruto. They get stranded in an unknown land filled with strange creatures. They have to rely on each other's skills. Anko's experience and Naruto's determination combine to help them survive and find their way back home. Along the way, they might discover some secrets about Anko's past.
In a more complex plot, Anko could be initially hesitant to date Naruto because of their age difference or her past traumas. But Naruto, with his determination, tries to break through her barriers and they gradually fall in love as they face various challenges together, like dealing with village politics and enemy attacks that put their relationship to the test.
A plot could revolve around Anko trying to teach Naruto some new jutsu, but Naruto being sarcastic about how he doubts it'll work for him. Like he says 'Sure, Anko - sensei, this jutsu will probably just make me look silly'. As the story progresses, his sarcasm actually helps him adapt the jutsu in an unexpected way. And also, they could get into a friendly competition where Naruto's sarcastic remarks add a humorous touch to the whole event.
Perhaps Naruto's godlike powers attract the attention of some dark forces, and Anko gets caught in the middle. Naruto then has to balance his newfound powers and his feelings for Anko while trying to keep her safe. Along the way, they go on adventures, learn more about each other, and fall in love. This could involve things like exploring new jutsu together, or uncovering secrets about Anko's past.
Maybe a fanfic where Anko and Kurenai are teaching Naruto some new jutsu, and they use lemons as a part of their training. For example, they set up a target practice where Naruto has to hit lemons that are floating in the air with his kunai. This could be a fun and light - hearted story.
One idea could be that Naruto realizes his feelings for Anko during a mission. Maybe they are stuck together in a dangerous situation and he sees a different side of her. This makes him start to think about a future with her.
To write their relationship well, start with their initial interactions. Anko is a tough and experienced ninja, while Naruto is full of energy and naivete. Show how Anko is initially dismissive but gradually comes to respect Naruto's spirit. For example, in a training scene, Anko could be harsh at first but then be impressed by Naruto's growth.
One plot idea could be that Anko and Naruto are paired for a Chuunin Exams - like competition. They have to rely on each other's strengths. Naruto's ability to think on his feet and Anko's experience in tricky situations make them a formidable team. As they progress through the rounds, they develop a strong camaraderie and learn from each other's fighting styles.
One plot idea could be that Naruto, with his masochist tendencies, volunteers for Anko's extremely tough training regime. Anko is initially puzzled by Naruto's eagerness to endure such harsh training but soon realizes that it's part of his unique personality. As they train together, they start to understand each other better and form a strong bond of friendship. Naruto's masochist nature actually helps him progress faster in the training, and Anko begins to respect his determination.
I'm not sure specifically about the plot of this particular 'Naruto Anko Contract Seal' fanfic as there could be many different interpretations and stories out there. It might involve Anko and some kind of special contract or seal in the Naruto universe, perhaps related to her abilities or a new adventure.
One possible plot could be Naruto slowly realizing his feelings for Anko during a mission they go on together. They face various challenges and Naruto starts to see Anko in a new light.