In such a fanfic, Naruto might use the absorbed Kyuubi power to explore new areas of the ninja world that were previously inaccessible. The power could allow him to break through barriers or traverse dangerous terrains. He could also use it to protect the Hidden Leaf in ways he couldn't before. For instance, he might be able to create a large - scale shield around the village using the Kyuubi's chakra. Additionally, the story could delve into the history of the Kyuubi and how Naruto's absorption of it affects the balance of power in the ninja world as a whole.
One possible plot development could be Naruto gaining new and extremely powerful abilities. For example, he might be able to use Kyuubi's chakra in more refined ways, like creating unique jutsu that combine his own skills with the raw power of the Kyuubi. This could make him nearly invincible in battles against his enemies. Another aspect could be his relationship with his friends and the village. With the new power, some might fear him while others try to understand and support him. It could also lead to Naruto having to face new and stronger foes who are attracted by his enhanced power.
Well, in a fanfic about Naruto absorbing the Kyuubi, he could experience a change in his personality. Since the Kyuubi's chakra is so powerful and has a certain wildness to it, Naruto might struggle to keep his usual positive and energetic self. He could become more brooding or serious at times. Also, the story could focus on how he trains to master this new power within him. Maybe he goes on a journey to find a way to fully integrate the Kyuubi's chakra without it overwhelming him, and along the way, he meets new characters who help or hinder his progress.
In this fanfiction, perhaps Naruto's physical abilities are enhanced as the Kyuubi's kit. He might be able to move faster, jump higher, and his strength could be superhuman. Also, his relationship with Sasuke could change. Sasuke might see Naruto as an even greater threat or, on the other hand, an ally he needs to understand better. And Naruto could start to have a different understanding of his own identity and place in the ninja world.
In such a fanfiction, perhaps there would be a spiritual journey for Naruto. As he's dying while sealing the Kyuubi, he could have visions of his past, his friends, and his dreams. He might see the faces of Iruka - sensei who first recognized him, or Hinata's loving looks. This could give him the strength to complete the sealing process. After his death, the village could start to remember and celebrate his life in different ways. Statues could be erected in his honor, and his story could be told to every new ninja trainee as a legend of self - sacrifice.
Another possible development is that she gains the ability to transform into different forms not just for combat but also for communication. For example, she could take on a more human - like form to better interact with the villagers, which helps to bridge the gap between her and the humans and also shows her adaptability and evolution as a character.
Naruto could become more confident. If the leotard is a symbol of his connection with the Kyuubi, wearing it might make him feel more in control of his power. He might start to take on more leadership roles in battles or in his village.
One interesting plot development could be Naruto using Kyuubi's power in a new and unexpected way in a battle. For example, he might be able to combine it with his Rasengan in a more powerful form that no one has ever seen before. This could give him an edge against a really strong enemy.
A possible plot development is that Naruto's study of chakra helps him master a new and powerful jutsu. For instance, he might develop a jutsu that can disrupt an opponent's chakra flow from a long distance. This would give him an edge in battles.
A third possible plot development could be the exploration of family values. Naruto, having grown up longing for a family, would be very committed to building a good family environment for Mordred. This could involve teaching Mordred about love, trust, and the importance of family bonds. Mordred, who may not have had such a positive family experience before, would then have to learn and grow in this new family setting. There could also be moments where Mordred has to defend Naruto or their family from external threats, which would strengthen their bond further.
One possible plot development could be Naruto leaving due to a misunderstanding. For example, if he is wrongly accused of a crime within the team. Another could be that he feels he is holding the team back in some way and decides to leave on his own to become stronger alone. Maybe he has a personal goal that he believes he can't achieve while still being part of Team 7.
One possible plot development could be that Naruto uses Kirin to surprise his enemies. Since it's not a jutsu associated with him usually, it would catch his foes off - guard.
One possible plot development could be the initial shock and adjustment for both Naruto and Mei. They would have to deal with the reactions of their respective villages. Naruto's friends in Konoha might be surprised, and Mei's allies in Kirigakure would also have their thoughts.