There could be a mysterious figure within the prison who has his own reasons for helping Naruto. This figure might be an ex - criminal who has a change of heart and sees Naruto as a way to redeem himself by assisting in the breakout.
One potential ally could be a fellow inmate who was wrongly imprisoned. This person might have skills or information that Naruto can use. For instance, if they are a master of stealth, they can help Naruto avoid detection during the escape.
Kakashi could also end up being an ally. Despite his loyalty to the village, if he discovers the real reasons behind Naruto's departure and realizes that the village has made a mistake, he might choose to help Naruto secretly. He has a deep bond with Naruto and would not want to see him in harm's way.
Naruto himself could be a likely main character. Given his determination and his ability to make friends, it would be interesting to see him in a harem situation within the Blood Prison. He could use his ninja skills to protect the harem members and try to break free from the prison's mysteries.
Sakura could be a great ally. She's already a skilled ninja with medical abilities. In a mage - influenced story, she could learn some magical healing spells to complement her existing skills. Her intelligence would also help Naruto in strategizing when they face magical threats.
Sasuke could potentially be an ally. Even though they've had their differences, Sasuke might understand Naruto's situation and decide to help him. Also, some of the Jinchuriki he's met before could be allies. They might see Naruto as one of their own and support him during his exile.
Even characters from other villages could potentially be allies. For example, Gaara. In the game world, he and Naruto could form a powerful duo, with Gaara's sand - based attacks complementing Naruto's Rasengan - like moves. They could fight together against common in - game threats.
One of the potential allies could be Jiraiya. Even though he has his own ties to Konoha, he might see Naruto's leadership in Oto as a way to bring about a new balance in the ninja world. Also, some of the more open - minded members of Oto itself could become Naruto's allies. They might be impressed by Naruto's leadership skills and his vision for the organization, which could be different from what Orochimaru had in mind.
He could make allies with versions of his own friends from different universes. For instance, a super intelligent Shikamaru from a high - tech universe. Also, Naruto might team up with powerful warriors from universes where the concept of chakra doesn't exist but they have their own forms of energy. Another potential ally could be a female version of himself who has different skills and a unique perspective.
One potential ally could be the younger versions of his existing friends like Sasuke. Even though Sasuke in the past may not be as developed as in Naruto's original timeline, Naruto could still see the potential in him and form an alliance early on.
Maybe Kurama, the nine - tailed fox inside Naruto, could be an unexpected ally in a new way. Since they have a bond, Kurama could provide Naruto with extra power and insights when dealing with time - related challenges. For example, Kurama might have some ancient knowledge about the flow of time that could help Naruto in his time - patrolling duties.
Sasuke could be one of his allies. Despite their differences, Sasuke might recognize the power Naruto has and see it as an asset to protect the village. Also, Kakashi Sensei, with his wisdom, would likely support Naruto and help him control his new powers.