Sabo's appearance in this secret chamber was no accident. Not long after Kujaku followed Arlong to the Fish-Man District, Zephyr had already sent his subordinates to secretly monitor the area.
The leader in charge of monitoring the Fish-Man District was none other than Sabo, who was only in his teens.
It was not that Zephyr's other students were incapable, but compared to Sabo's abilities, they simply were not suited for this sort of work.
Sabo had eaten the Goro Goro no Mi. As his mastery of his Devil Fruit deepened over the years, he had developed an ability he named "Mantra."
With his current development of the Goro Goro no Mi, Sabo could monitor sound waves within a radius of several kilometers. As long as he calmed himself and focused, nothing happening in the Fish-Man District could escape his notice.
Even the battle taking place in this underground chamber had been detected by Sabo.
Although he had been unable to find the entrance to the chamber, as a Logia user, Sabo naturally had his own methods. All he needed to do was use his power to open a small hole in the ground, then he could immediately turn into lightning and enter the chamber.
Though he did not know Hyouzou's group's identities, Sabo was certain that these fish-men were the targets he had been searching for!
"A brat?"
"When did...?"
"How did you get in here?"
Sabo's youthful face was exceptionally deceptive, but Hyouzou and the others did not underestimate him because of his age.
From the fish-men's perspective, this child was strange in every way. Most difficult to explain was how Sabo had entered this chamber without making a sound.
That alone was enough to make Hyouzou and the others take him seriously.
"What a strange kid."
"This brat