One idea could be exploring the relationship between the Jinchuuriki and Shukaku in more depth. Maybe the Jinchuuriki tries to communicate with Shukaku in a different way than in the original series, leading to new powers or understandings. Another plot could involve the Jinchuuriki being targeted by a new group who wants to use Shukaku's power for their own evil purposes. The Jinchuuriki then has to fight not only to protect themselves but also to keep Shukaku from being misused.
A great plot idea could be a time - travel scenario within the 'Naruto Jinchuuriki of Shukaku Fanfiction'. The Jinchuuriki is sent back in time and has to deal with the early days of Shukaku's existence in their body. They could try to change the way things happened in the past to avoid some of the negative consequences that came with being a Jinchuuriki in the original timeline. Also, the Jinchuuriki could form an unexpected alliance with an old enemy from that time period to achieve this.
Well, perhaps a plot where the Jinchuuriki of Shukaku discovers a hidden ability of Shukaku that was lost in history. This discovery could put them in a position where they are both feared and revered in the ninja world. The other villages might try to either steal this newfound ability or destroy the Jinchuuriki to prevent them from becoming too powerful. The Jinchuuriki would then have to navigate through political intrigue and battles while also trying to master this new power.
The other Jinchuurikis could be potential allies. They understand the struggles and the power that comes with having a tailed beast inside them. For example, Killer Bee, who has a good relationship with his tailed beast, could share his insights on how to better co - exist with Shukaku. Tsunade might also be an ally, as she is a powerful Hokage who could offer protection and resources to the Jinchuuriki.
A possible plot is that the female Shukaku is captured by an evil organization. Naruto, being the hero he is, sets out on a rescue mission. Along the way, he discovers more about the female Shukaku's past and her connection to the history of the ninja world. This could involve ancient secrets and prophecies related to the tailed beasts.
Well, you could focus on the relationship between the jinchuuriki and their extended family members in the fanfiction. For instance, how does the jinchuuriki's relationship with their grandparents change when they find out about the tailed beast? Also, a plot could revolve around the family trying to help the jinchuuriki control the power of the tailed beast. They could seek out ancient scrolls or wise sages to learn techniques that would make it easier for the jinchuuriki to co - exist with the beast.
One idea could be that the female Shukaku has been living in hiding among the Leaf Village. Naruto discovers her secret and they form an unlikely bond as they train together to control her Shukaku powers. This bond then turns into a deep friendship that might lead to more as they face various threats to the village.
One idea could be exploring the daily lives of the Jinchuuriki in the village. How they interact with each other, share their experiences of being hosts. Another could be a story about a new Jinchuuriki arriving at the village and how they struggle to fit in.
One plot idea could be a crossover where the female Kyuubi and female Shukaku are somehow transported to the FF7 world. They could team up with the FF7 characters to fight a common enemy, perhaps a new threat created by a combination of Naruto -verse and FF7 -verse magic or technology.
A possible plot is that the Three - Tails Jinchuuriki discovers a unique ability related to the tailed beast that no one else knew about. For example, they could find a way to use the Three - Tails' chakra to heal others in a time of great need. This could also attract unwanted attention from those who would misuse this power. They then have to protect this new - found ability while also dealing with the normal challenges of being a Jinchuuriki.
One idea could be that Shukaku is somehow transported into the Harry Potter universe. Maybe he ends up in the Forbidden Forest and has to navigate the magical creatures there. Another could be a story where a Hogwarts student discovers a way to summon Shukaku during a particularly difficult time at school, like when facing a powerful dark wizard. Or perhaps Shukaku's powers are combined with a Hogwarts spell to create a new form of magic.
One interesting plot point could be the reaction of the other Jinchuuriki. Since Naruto now has the power of all the Tailed Beasts combined, the other former Jinchuuriki like Gaara might have mixed feelings. They could be both in awe of Naruto's new power and a bit envious at the same time.
One interesting Naruto Shukaku fanfiction could be about Shukaku's backstory before being sealed into Gaara. It might explore how it lived in the desert and its interactions with other beings there.