When Mundo leaped onto the Denis Three and engaged Ronin, if the pirates' second ship also had a Golden Knight, he certainly would have tried to board and support Mundo.
But that didn't happen. They just continued to use their Magic Energy Cannon to bombard Reis and the others from a distance. Only after seeing that the Magic Energy Cannon was ineffective did they consider boarding.
Furthermore, their method of boarding wasn't like Mundo's, who could leap dozens of meters. Instead, they had their ship slowly approach the Denis Three.
Therefore, Ronin concluded, 'There's no Golden Knight on this ship.'
So, he boldly imitated Mundo and leaped directly toward the enemy ship.
He soared through the air, a sight that stunned the pirates on the enemy vessel. Only their two leaders reacted. "Quick, open fire!"
In a panic, the Archers nocked their arrows, drew their bowstrings, and hastily aimed at Ronin.
But by then, Ronin had already landed on the deck like a great bird.
