Popular plotlines often include Naruto's journey to become Hokage and how it impacts his harem. Kurenai, being an experienced ninja, could support Naruto in his quest, and their relationship could develop from there. Additionally, the idea of Naruto having to balance his ninja duties with his relationships in the harem is a common plot. He might have to choose between a mission and spending time with Kurenai and the other harem members, leading to emotional and character - building moments in the fanfiction.
Another plotline could be that Naruto, after achieving some great feat like saving the village again, suddenly finds himself the object of affection of multiple female characters. Some of these plotlines might involve a sort of magical or chakra - related accident that makes the women more attracted to him. Like, a strange jutsu backfires and instead of harming Naruto, it makes him exude an irresistible charm to the females around him.
Some plotlines involve adventures where the Naruto - Tsume harem has to face external threats. This not only showcases their combat abilities but also how they support each other. There may also be plotlines about cultural differences within the harem, as the Naruto universe has a diverse range of characters with different backgrounds.
A frequent plotline is the training aspect. Naruto could teach some of Rias's peerage his ninja training techniques, which would be quite different from the normal training in the devil world. This can lead to new power - ups for the characters. There are also plotlines where Naruto is mistaken for a powerful devil or some other supernatural being in the 'High School DxD' world. This misunderstanding can create a lot of chaos and interesting story developments as he tries to clear his name while also dealing with Rias's harem and the various factions in that world.
One common plotline is the main male character, often Naruto, having various kunoichi from the Naruto universe develop feelings for him over time. For example, Sakura, Hinata, and Tenten might all be part of the harem. Another plotline could involve Naruto going on special missions with the kunoichi in his harem, and during these missions, their relationships deepen. There can also be plotlines where Naruto has to protect his harem of kunoichi from a new threat in the ninja world.
Some fanfictions have a plot where Naruto is sent to train in the Land of Water. There, he trains with Mei's subordinates and catches Mei's eye. She then decides to take Naruto under her wing. As Naruto grows stronger, more female characters, such as Ino, sense his power and charm, and they all end up in a sort of harem situation around Naruto.
One popular plotline is the characters from Naruto and RWBY coming together in a shared universe. For example, Naruto characters might end up at Beacon Academy in RWBY's world. Another plotline could involve a character from one series having to adapt to the powers and culture of the other series while building relationships with multiple characters, creating a harem dynamic. It often includes elements of friendship, teamwork, and the discovery of new abilities.
One common plotline is that Ichigo and Naruto end up in a shared universe where they both attract a harem of female characters from their respective shows. For example, Ichigo might have Orihime, Rukia, and others in his harem, while Naruto could have Hinata, Sakura, etc. Another plotline could be a competition between them to see who can build the more impressive harem.
One popular plotline could be Naruto being transferred to the Highschool DxD world and his ninja skills making him stand out among the devils and angels. This leads to various characters being attracted to him, forming the harem. Another could be Naruto having to use his chakra to solve the power struggles in the DxD world while also dealing with his newfound romantic interests.
In some stories of this genre, a plotline is that the strong demon reader is on a quest for something, like a powerful artifact or to find their true place in the world. Along the way, they encounter the characters who will become part of their harem. These characters are initially skeptical or even hostile towards the reader because of their demon nature. However, as they witness the reader's determination and good heart during the quest, they start to develop feelings. This creates a dynamic where the harem grows as the reader's journey unfolds, with each member having their own role to play in the overall story.
One common plotline could be Kurenai trying to keep Naruto away from certain dangerous missions. She might think he's not ready yet and be overly protective in the fanfiction.