One consequence could be that his friends are filled with grief and a strong desire for revenge. They might go on a rampage to find the ones responsible for Naruto's death.
The village that Naruto belonged to would probably be in chaos. Naruto was a symbol of hope and strength, so his death in the gorge could lead to a loss of morale among the villagers. They may start to fear for their safety more and question the future of the village without him. Also, his death could potentially lead to power struggles within the village as different factions try to fill the void he left behind.
In the shinobi world, Naruto's death in the gorge could have far - reaching effects. Other villages might see it as an opportunity to take advantage of his village's weakened state. This could lead to increased tensions and potential wars between villages. His death could also inspire some ninjas to take up his ideals more fervently in his memory, while others may become disillusioned with the whole ninja system that couldn't protect someone like Naruto.
Well, in some possible versions of this fanfiction, Naruto might die from a powerful enemy ambush in the gorge. Maybe a group of rogue ninjas with strong and unexpected jutsus caught him off - guard.
One possible consequence could be chaos in the ninja world. With Naruto, a major force for peace, dead and the Kyuubi released, other villages might see an opportunity to gain power or territory. Villages that once relied on Naruto's protection would be vulnerable. Also, the Kyuubi, being a powerful and wild force, could start causing destruction on its own, without Naruto to control it.
One possible consequence could be that Naruto is ostracized by some in the ninja world. Since controlling blood is a rather strange and perhaps 'creepy' ability to some, they might view him with suspicion or fear. This could lead to him having to prove himself more often in battles and interactions.
His reputation in the ninja world could be damaged. If Padme spreads false information or reveals his secrets, other ninja might view Naruto differently. They could see him as a liability or a threat. This could lead to him being isolated in the ninja community, and he might have to fight harder to prove himself again.
One possible consequence is new and unexpected abilities. For instance, if his DNA is changed to incorporate some sort of spirit energy, he could gain the ability to communicate with the dead. Another consequence could be changes in his appearance, like his hair color or eye color changing. This can also lead to social isolation as his friends might not recognize him at first.
One consequence could be that his friends are devastated at first. They might go through a period of grief and self - blame for not being able to protect him.
One possible reason could be that the Kyuubi's power goes out of control completely. Since Naruto has the Kyuubi inside him, if he fails to maintain the balance, the Kyuubi's raw and unrestrained power might end up killing him.
Well, his relationship with the village could be affected. The villagers who were once afraid of the Kyuubi might be even more hesitant to accept Naruto now that he has the complete power. However, his closer friends like Sasuke and Sakura would stand by him. Sasuke might see Naruto as an even greater rival, but also a potential ally in protecting the village. And Sakura would be there to support Naruto both emotionally and in battle if needed.
One possible consequence could be chaos. Naruto was often seen as a symbol of hope and peace. His death at the hands of Madara would likely shatter the dreams of many characters. The villages might descend into fear and distrust again, and there could be a power vacuum that leads to wars between the different ninja villages.
One possible consequence is that he could lose the trust of his friends. If everyone believes he is responsible for something his sister did, his friends might start to distance themselves from him.