In the last chapter, we learned that Rocky Port is in Hachinosu and has just been repaired. I think Koby awaken a power and almost destroy Rocky Port, similar to what Garp did in the last chapter. We've seen characters with similar powers to the one I'm talking about, like King Elizabello's King Punch

Or Sai's Drill Dragon technique

But I think that the power that Koby awakened during the Rocky Port incident is stronger than both of these powers, it is a power that can be compared to the Haoshoku no Haki and Koby uses this power together with the haki and techniques of Garp. What do you think?