Perhaps in this fanfiction, Naruto has to protect Kurenai from a new threat in the village. As he safeguards her, they spend a lot of time together. Naruto tells her about his dreams for the future of the village and Kurenai shares her own hopes. Their conversations lead to a deeper connection, and Naruto's selfless nature makes Kurenai fall for him.
One possible plot could be that Naruto, after achieving great things in the village, catches Kurenai's eye in a new way. Maybe they start training together and gradually develop feelings during their sparring sessions and discussions about ninjutsu. Naruto's positive attitude starts to chip away at Kurenai's more reserved nature.
Well, it could be that Naruto is on a mission with Kurenai and they get stranded in an unknown place. During their time trying to get back, they rely on each other. Naruto shows his resourcefulness and Kurenai her wisdom. This shared experience makes them see each other in a different light, leading to the start of a romantic relationship.
One possible plot could be that Kurenai is obsessed with Naruto because she sees in him the potential to bring great change to the Hidden Leaf. She might secretly train him in some unique jutsu, which could cause some friction with other ninja teachers who think Naruto should follow the regular training regime.
In a fanfiction scenario, perhaps Kurenai is in a dangerous mission and gets trapped in an illusion created by an enemy. Naruto, with his strong will and the help of his Nine - Tails chakra, is able to break through the illusion and save her. He then helps her complete the mission and they become closer friends as a result.
Perhaps there was a misunderstanding. Kurenai might have thought Naruto was involved in something bad. For example, she could have been misled to believe Naruto was working with a group of rogue ninjas. So she attacks him, and Naruto has to prove his innocence while also dealing with her attacks.
One possible plot could be that after the war, Naruto and Kurenai start to work closely together on rebuilding the village. As they spend more time together, they develop feelings for each other. Eventually, they get married and face challenges like dealing with the expectations of the village and Naruto's duties as a hero while also building their own family.
The plot might involve Kurenai seeing Naruto as a kindred spirit. Maybe she lost someone dear and sees in Naruto the same pain and determination. She adopts him and starts to teach him about the importance of family and bonds. Naruto could then grow up with a stronger sense of self - worth. He might also become more confident in his abilities earlier because he has Kurenai's guidance. This could change the way he approaches his training and his interactions with the likes of Sasuke and Sakura.
In this fanfiction scenario, Kurenai could also help Naruto with his emotional control. Naruto has a strong will but sometimes his emotions can get the better of him. Kurenai, with her calm and collected nature, could teach Naruto how to stay focused and in control during intense situations. For example, she could use her own experiences to show Naruto how to channel his emotions into strength rather than letting them cloud his judgment. This would not only improve his combat abilities but also his decision - making skills.
Well, it could be that Kurenai is somehow deceived into believing Naruto has done something really bad. Maybe she's tricked by an enemy who fakes evidence against Naruto. So, in her misunderstanding, she turns against him.
Well, it could be about Kurenai having some secret connection to Naruto as his sister. Maybe she discovers this truth and has to deal with the implications. For example, she might have to protect Naruto from new threats while also coming to terms with her new - found family relation.
In such a fanfiction, maybe Kurenai could help Naruto with his stealth skills. Since she's an expert in genjutsu, she might teach Naruto how to use genjutsu more effectively in battles, like against the Akatsuki members.
Perhaps Naruto owns Kurenai in the sense of protecting her. In the fanfiction, there could be a new and powerful enemy threatening the village. Naruto, with his great power, takes it upon himself to keep Kurenai safe. He stands in front of her in battles, and his actions and decisions end up dictating how Kurenai can move and act, thus 'owning' the relationship in terms of protection.