The negotiation moved to Marineford, where Touya stood before Fleet Admiral Sengoku, the three Admirals(Kuzan, Borsalino, Sakazuki), and the veterans Tsuru and Zephyr. To prove his worth, Touya demonstrated the sheer versatility of the five core elements. He defeated a Lieutenant Commander with three forms of Thunder Breathing so fast the man's shadow didn't have time to move. He intentionally lost to a Commander, citing his "weak" seventeen-year-old physique to keep his true potential hidden.
Sengoku was ecstatic. "The styles of Flame, Water, Thunder, Wind, and Rock... this could change the power balance of the world." Touya handed over written manuals, his voice turning cold. "If these reach the hands of pirates, Sengoku, I won't forgive you."
The next five years were a descent into hell. Under the brutal tutelage of Garp and Zephyr, the trio was forged. Garp threw them off collapsing cliffs to force the activation of Soru; he beat them with "Fists of Love" until their skin instinctively hardened into Tekkai. Zephyr was even harsher, blindfolding them in the middle of a storm, forcing them to sense the "intent" of the rain until their Observation Haki flickered to life.
The turning point came during a spar with a Logia-class instructor. No matter how fast Touya moved, his blade passed through the smoke harmlessly. Zephyr's voice cut through his frustration: "Power without will is empty!" Touya stopped fighting the air and started fighting with his soul. His katana darkened, coated in the obsidian sheen of Armament Haki. The strike connected, drawing blood.
By the end of five years, Touya had mastered the core Rokushiki, while the sisters specialized—Kanae excelling in the aerial freedom of Geppo and Shinobu in the lethal precision of Shigan. They were no longer refugees; they were weapons.