Theory: Kuzan will serve as Koby's "Kaido," during the Final Saga.

Hello again, One Piece power scalers, it's Esmund.

Let me preface what I mean by "Kaido":
Simply put, it's the idea that a character fights a top-tier and earns multiple buffs during the said fight to—in some way or another—defeat said top-tier. Similar to Luffy's fight against Kaido.

Luffy evolved multiple times before and during Roof Piece and his 1v1 matches against Kaido and carried himself as a Yonko-level combatant.

Similarly, I'm convinced that Koby will likely fight Kuzan and, by defeating him, will earn himself as an Admiral-level (or Yonko-level) combatant.

Narratively, this may be pretty convenient. Rather than mimicking the Roger + Garp vs. Rocks situation with their parallels: Luffy + Koby vs. Black Beard, we can have Luffy defeat Black Beard on his own, while Koby takes on Black Beard's strongest crew member: Kuzan.

But I may be pushing it.

I wouldn't know what kind of buffs Koby will be getting, but leading up to it, I reckon it'll be related to awakening CoC and ACoC, most likely.

Thank you for reading; have a wonderful day.

https://preview.redd.it/an3jb6kbxt4e1.jpg?width=1920&format=pjpg&auto=webp&s=50b37b3de084db41ec3ba72e0e0d72dccec1b1b1