Boruto: Can Kashin Koji replace Sasuke as Boruto's teacher? (2025)

In the ever-changing universe of Boruto and Boruto: Two Blue Vortex, major threats and new mysteries are constantly being introduced. For instance, the Karma seal and the Otsutsuki clan. Among all of this chaos stands Boruto Uzumaki, once mentored by Sasuke Uchiha, who has now turned into a tree, taking away his ability to continue teaching.

This raises an unavoidable question among fans: Can Kashin Koji replace Sasuke as a teacher?

The answer is both yes and no. Although Sasuke was the first one to recognise Koji's potential and take him as a student, currently, Kashin Koji has the tools and vision to prepare Boruto for what might come next. Moreover, now more than ever, the hero of this story needs someone to believe in him and be a guide.

One of the biggest reasons Sasuke cannot mentor him anymore is that he is stuck as a tree by the sinister 10-tailed beast, which has evolved. Furthermore, these threats are not just powerful, but are of unknown origins and deeply entwined with Karma, time-space manipulation, and the will of celestial beings. Even if he were present, he wouldn't have the answers to Karma or the ability to navigate this new world of divine curses and predestined battles.

Whereas, Kashin Koji initially was a mysterious figure who turned out to be a clone of the legendary Sanin Jiraya. Koji represents the bridge between legacy and innovation. Notably, he understands and has information about Karma, how these celestial markings function, evolve, and what they might mean for those who bear them.

This information is key to defeating them. In addition, with the current state of things, Koji is the best character to look after his growth, owing to his intellect and predictive abilities. He has the foresight to anticipate events of the future and can come up with strategic plans to ensure victory.

The only place where Kashin Koji may fall short is in emotional connection. Sasuke’s mentorship worked not just because he was powerful, but because he believed in Boruto. Koji may never be that figure for him. He might never be able to inspire the same sense of loyalty or personal connection. But perhaps that’s the point. Finally, Boruto no longer lives in a world where he can take it easy. The stakes have changed, and so must his guide.

What Led to Boruto Seeking Help from Koji

To understand what led the protagonist to accept help from Koji, we must understand what he is up against in the story. His greatest threat currently is the Otsutsuki, who is patiently waiting to take over his consciousness. His adopted brother, Kawakii, is next in line after Otsutsuki, who, with the help of Eida’s powers, altered reality. As a consequence, Boruto is hunted by the very village he once protected.

And finally, he also needs to fight the ten tails, which have evolved into something far more sinister. Under Code’s control, fragments of the Ten Tails have been reshaped into terrifying humanoid entities, each possessing immense chakra, regeneration, and a mysterious intelligence.

As of now, they are the most dangerous threat that their universe has to face eventually. With all of this burden on his shoulders, Boruto needs someone to guide him and help in make strategies. That is why Koji is mentoring him at the moment.

In conclusion, Kashin Koji is not a replacement, but rather a necessary character who needs to help the protagonist evolve and reach his full potential. Furthermore, Koji has the knowledge, clarity, and foresight that no one else can provide. In the series, his presence is not to take Sasuke’s place but to pick up where he left off.

In the end, he is another mentor who needs to guide him for a new chapter, where the protagonist has to face God-like opponents.

Edited by IRMA