I don’t think just having the Copy ability automatically means Haru will end up like Johan. Copy is only one piece of the equation. Environment, mindset, work ethic, and personality matter way more when it comes to long-term growth. The same goes for Gujka.

For Gujka, I can see him leaning heavily into Endurance Mastery and maybe even developing something like Black Bones later on. Unlike Gun, who mainly dominates through strength and endurance, Gujka feels more speed-and-endurance oriented, kind of similar to Zack in that sense. I would not be surprised if he eventually reaches unmeasurable stats, especially in endurance. That said, I do not really see him getting any unique or flashy abilities. He might just push his core stats to the extreme instead of unlocking something special.Its possible for him to get 2 masteries.

As for Haru, it would honestly be surprising if she reaches full Mastery, let alone surpasses it. Even then, I doubt she will get a Copy-related card. It feels more likely that she ends up with stat-boosting type cards like others rather than something directly tied to Copy.She may surpass mastery in one attribute.

By EOS, I can see Gujka reaching around Busan No.5 or No.6 level, maybe even No.4 if things really go in his favor. Haru might end up around Seokdu level.

How much can Gujka and Haru grow ,what will be their end heights of power?