Maybe in the fanfiction, Kurenai discovers Naruto's vampire nature by accident. At first she's scared, but then she realizes Naruto is still the same person she knew. They then team up to fight a common enemy, like a dark vampire clan that wants to take over their village. Naruto's vampire abilities combined with Kurenai's genjutsu skills could make for some really cool battle scenes.
One plot idea could be that Vampire Naruto has to protect Kurenai from other vampires who see her as a threat. Since Naruto has unique powers as a vampire, he can use his speed and strength to fend them off.
One plot idea could be that Naruto, after being banished, crosses paths with Kurenai who is on a solo mission. She initially has her doubts about him due to his banishment but gradually realizes he was wrongly accused. They team up to face a common enemy that threatens the village from afar. This could lead to a growing bond between them.
Another idea is a story where Naruto joins the ANBU and is paired with Kurenai for a special undercover operation. They have to infiltrate an enemy organization that is suspected of planning an attack on Konoha. Along the way, they learn more about each other's pasts and develop a strong bond as comrades.
A plot might involve Kurenai and Naruto teaming up to solve a mystery within the Leaf Village. There could be strange disappearances that seem related to a long - forgotten jutsu. They would have to use their unique skills, Naruto's brute strength and Kurenai's genjutsu, to uncover the truth. Also, a story where Kurenai discovers a new side of Naruto during a joint mission, like his ability to inspire others in a difficult situation, could be interesting.
One idea could be that Naruto accidentally discovers a hidden jutsu that makes him irresistible to women, including Kurenai. This leads to a series of comical and heart - warming situations as he tries to deal with this new - found effect on the female ninja in the village, especially Kurenai who has her own reservations at first.
A fanfiction could revolve around a training arc. Naruto, Kurenai, and Anko train together. Kurenai teaches Naruto about genjutsu, and Anko shows him some of her more dangerous combat techniques. In return, Naruto shares his never - give - up attitude and his unique way of seeing chakra flow, which gives Kurenai and Anko new insights into their own abilities.
In a Naruto arranged marriage Kurenai fanfiction, perhaps the elders of the village arrange the marriage to bring stability. Naruto is initially resistant as he has feelings for someone else (like Sakura). However, Kurenai is patient with him. She shows Naruto a different side of life, teaching him about the importance of family and home. As time passes, Naruto realizes that Kurenai is a great partner. He starts to see her in a new light and eventually falls in love with her through her gentle guidance and understanding nature.
Well, a possible plot is that Anko's vampire nature gives her unique abilities that Naruto finds useful in a mission. They could go on a journey together to find a cure for her vampirism because Anko wants to be fully human again. Along the way, they face various challenges and their relationship grows from distrust to friendship.
One plot idea could be a training adventure. Naruto teams up with Anko, Kurenai, and Yugao for a special mission that requires all their skills. They go to a mysterious forest where they encounter strange creatures. Along the way, Anko's wild nature clashes with Kurenai's more calm and collected approach, while Yugao tries to keep the peace. Naruto, of course, is eager to prove himself and learns a lot from the three female ninja.
One idea could be that Anko and Kurenai both have a crush on Naruto secretly. Yugao notices this and tries to play matchmaker in a comical way. She sets up situations where Anko and Kurenai end up competing for Naruto's attention in friendly challenges, like a cooking contest or a ninja skills show - off. And Naruto is completely oblivious to their feelings at first, which adds to the humor.
Another plot could involve Naruto accidentally getting involved in a magic or curse situation that binds him with the female characters related to Kurenai. As a result, they have to stay close to him to figure out how to break the spell. During this time, they discover new sides of Naruto and feelings start to develop among them all.