Sasuke could be one of his allies. Despite their past differences, Sasuke would recognize the potential of Naruto's new power and the good it could do. Also, Kakashi could be an ally. His wisdom and experience would be valuable in guiding Naruto in this new role. And of course, the other members of the Konoha 11, like Sakura, who would support Naruto in his journey as a god of destruction, believing in his good intentions.
I think Gaara would be a strong ally for Naruto. They have a deep connection from their past experiences. Gaara, with his own control over powerful forces, could understand Naruto's situation. Hinata would also be by Naruto's side. Her love for Naruto would make her a loyal supporter. And perhaps some of the tailed beasts could be his allies too. They have a bond with Naruto, and together they could form a powerful force as Naruto takes on the role of a god of destruction.
In a 'naruto becomes a god fanfic', Naruto's allies could include not only his friends from Konoha but also some unexpected characters. For example, some of the tailed beasts that he has befriended over the years might become his allies in a more direct way. They could combine their powers with Naruto's new god - like abilities to face common threats. And perhaps some of the old ninja clans that have respected Naruto's power and his ideals would also side with him.
One possible ally could be Poseidon. Naruto's connection to water - based jutsus might make Poseidon interested in him. They could form an alliance where Naruto helps Poseidon in battles using his water techniques in a new and unexpected way, and Poseidon, in return, helps Naruto understand the politics and power dynamics of the Greek god world. Another ally could be the nymphs. These nature spirits might see Naruto as a protector of sorts. Since Naruto has always had a soft spot for nature in his own world, he could bond with the nymphs and they could help him navigate the forests and hidden places of the Greek world, as well as provide him with information about other gods and mortals.
I think Hinata would also be an ally. She has always been in love with Naruto and would support him no matter what. And the rest of the Konoha 11 would probably be his allies too. They have all fought together and have a sense of camaraderie. With Naruto as a god - like figure, they could help him spread his message of peace and use his powers to protect the village and the world at large. They would be the ones who understand Naruto the best and would be there to assist him in any way they can.
The plot could involve Naruto being chosen by some ancient prophecy to become a god of destruction. He first has to go through a series of trials. These trials could test his mental and physical strength as well as his understanding of power. Once he becomes a god of destruction, he has to balance his new role with his old ninja values. He might face challenges from other powerful beings who don't want a newcomer in the role. Naruto would then have to prove himself worthy by using his powers for justice and protection.
In this fanfiction, Naruto could gain the powers of a God of Destruction through a special encounter. Maybe he meets an ancient being who sees his potential. His training to control these powers would be intense. He would have to learn to balance his old ninja values with the new role of maintaining balance in the universe through destruction when necessary.
Naruto's character development would be complex. He would gain a new sense of purpose. In his ninja world, his goal was to protect his village and become Hokage. Now, he has to protect an entire universe. This would force him to grow in ways he never expected. He would have to learn about different cultures and species in Universe 7. His values would also be tested. For instance, he might have to make tough decisions about sacrificing one planet to save the whole universe, which would be a major shift from his usual 'never - give - up - on - anyone' attitude.
Perhaps a fallen god who, despite losing his status, still has the knowledge of how to train a God of Destruction. This character could have his own motives for training Naruto, like regaining his former glory through Naruto's success.
Naruto could also face challenges from other powerful beings in the universe. Since he is now a God of Destruction, he might attract the attention of those who oppose such a powerful entity. He would have to fight battles not just with his physical strength but also with his wits to maintain his position and the balance he is supposed to uphold.
He could potentially ally with other characters who also have an interest in the Zerg. Maybe some of his ninja friends who are intrigued by his new form and abilities. Or perhaps he would find unlikely allies among the Zerg themselves, like a group of Zerg that are more peaceful or have a common enemy with Naruto.
Hermione could be one of his allies. She's always been by Harry's side and with her intelligence, she could help Harry understand and control his new powers. Also, some of the outcast wizards and witches, like the werewolves or half - bloods who have been marginalized in the wizarding world, might see Harry as their champion and ally with him.