One consequence could be that he becomes extremely powerful. His physical abilities like strength, speed, and endurance are enhanced. He can also use more powerful jutsus with the extra chakra boost from the Kyuubi.
Well, in many fanfictions, Naruto often starts by facing a life - threatening situation. This intense moment somehow triggers a connection with the Kyuubi within him. Maybe it's during a battle against a really powerful enemy that he has no other choice but to tap into that power. It could also be due to some kind of emotional turmoil, like seeing his friends in great danger.
In some fanfictions, controlling the Kyuubi chakra might change Naruto's appearance. He could have some physical features related to the Kyuubi, like red - tinted eyes or a more ferocious look when using the chakra. Also, his relationships with others might be affected. Some might be in awe of his new power, while others could be afraid of him.
One interesting 'Naruto Kyuubi Chakra' fanfiction could be one where Naruto has better control over the Kyuubi's chakra from the start. It changes the whole dynamic of his early battles and how others perceive him in the village.
In fanfiction, the Kyuubi's Yin chakra in Naruto is often portrayed as a source of great power and mystery. Some fanfictions might show Naruto having to master this part of the chakra to gain new abilities, like enhanced control over illusions or a deeper connection to the spiritual side of his ninja powers.
Well, in certain fanfic concepts, Naruto could control Kyuubi chakra with the help of unique jutsu or seals. For example, he might discover a new sealing technique that allows him to better manage the flow of the Kyuubi's power. This new seal could work in harmony with his own chakra system, enabling him to draw on the Kyuubi's strength without being overwhelmed. Also, some fanfictions might suggest that his strong emotional bonds, like his friendship with his comrades, give him the extra mental fortitude to control such a powerful chakra source.
In fanfiction, the 'Naruto Kyuubi Chakra' often plays a central role in power - ups. It can make Naruto much stronger than in the original story, allowing him to defeat powerful enemies more easily.
One role is to enhance Naruto's combat abilities. It can give him an edge in battles, like allowing for more unpredictable attacks. For example, it could make his shadow clones more versatile.
His friends might respect his decision more. They know how powerful the Kyuubi's chakra is, but also understand Naruto's reasons for not wanting to use it. This could strengthen their bond as they see Naruto's integrity.
This wish for unlimited chakra could also have some drawbacks. Naruto might become over - reliant on his chakra and not focus on improving his other skills like taijutsu or ninjutsu strategy. Also, having such an excessive amount of chakra could make him a target for those who want to steal or control it, putting him and his friends in danger.