**Chapter 3: Echoes of Legends**

Days turned into nights, and Rokotto found himself increasingly drawn to the tales of the past. Yumi's research had ignited a spark within him, a thirst for knowledge that led him down a path of discovery. He spent hours poring over historical records, holographic archives, and ancient texts, seeking to uncover the truth behind the stories that had become legends.

In the quiet of his workshop, holographic displays illuminated the walls with images of battles long forgotten. Rokotto's fingers danced across interfaces, accessing databases that held the key to understanding the enigmatic warriors who had once protected Earth.

As he delved deeper into the history, Rokotto learned about the Saiyans - a proud race of warriors from distant planets. These Saiyans had formed alliances with Earth's defenders, battling formidable foes to ensure the planet's safety. The images of battle formations, energy clashes, and camaraderie painted a vivid picture of a time when conflict had been a way of life.

One evening, as Rokotto immersed himself in the records, Yumi's voice echoed through a holographic communication device on his desk. "Rokotto, I've made a breakthrough! Meet me at the rooftop garden."

Eager to share his discoveries, Rokotto quickly made his way to the designated meeting spot. Yumi was waiting there, her eyes bright with excitement.

"Rokotto, look what I found," Yumi exclaimed, holding up a holographic orb containing a swirling image of energy signatures.

Rokotto leaned closer, his eyes narrowing in fascination. "What is it?"

Yumi grinned. "This is a depiction of an ancient technique known as the 'Kaioken.' It's an art that harnesses the body's energy to enhance physical abilities. I believe it might be the key to unlocking dormant potential within us."

Rokotto's curiosity deepened as Yumi explained the intricacies of the Kaioken technique. He watched as the holographic image displayed warriors surrounded by an aura of energy, their power intensifying with each successive level of the technique.

"This could be what we need," Yumi said. "The legends speak of warriors who tapped into their inner strength through rigorous training and the mastery of techniques like the Kaioken. Maybe this is how we can awaken our hidden potentials."

As Rokotto absorbed the information, a mixture of excitement and determination welled up within him. The past was more than stories; it held the key to unlocking abilities that had lain dormant within him. The idea of harnessing the Kaioken technique resonated with his passion for mechanics and his innate curiosity.

With Yumi's guidance, Rokotto began to practice the basics of the Kaioken. Together, they studied the energy flows and focused on harmonizing their inner strength. Each day, they dedicated themselves to the training, honing their control over their bodies and the energy that coursed through them.

As weeks passed, Rokotto felt a subtle change within himself. The energy he had experienced during his transformation was now under his control, a wellspring of power waiting to be tapped. Yumi's presence was an invaluable guide, her determination and encouragement pushing him to strive for greatness.

The rooftop garden became a sanctuary of training, a place where the echoes of legends mingled with the present. With each session, Rokotto and Yumi grew stronger, their bodies adapting to the techniques of the past. The peace they had always known now intertwined with the potential for power beyond imagination.

Amidst the vibrant lights of Novatropolis, Rokotto's journey of discovery had taken a new turn. The legends of ancient warriors had transitioned from tales of the past to a map for the future. The path ahead was uncharted, and Rokotto's spirit burned with the desire to uncover the depths of his potential and the mysteries that awaited him.