After returning to his residence, Rio felt a mix of emotions. Anger, sadness, and determination surged within him. He knew that if he wanted to break free from his family's clutches and pursue his newfound passion for magic, he had to become stronger. He needed to prove himself in the upcoming duel.

Rio remembered the magic book he had bought in secret. He fetched the worn and dusty tome, carefully opening it. The book contained the basics of magic, teaching the reader how to control mana within their body and use basic magical skills. Rio was captivated by the thought of wielding magic and began studying the book intently.

Over the next several days, Rio poured all his effort into understanding the principles of magic. He learned that mana was the fundamental energy behind every magical phenomenon, and that by controlling the flow of mana within his body, he could use basic skills. He focused on mastering Mana Circulation and Mana Concentration, which were essential for every mage. With these basics in place, he could then learn the three fundamental skills detailed in the book: Strength, Haste, and Mana Burst.

Strength was a skill that allowed the user to amplify their physical power by channeling mana into their muscles. Haste increased the user's speed and reflexes by infusing their body with mana. The old Rio had never managed to learn Mana Burst, but Ethan's knowledge from Earth and his analytical mind gave him an edge in understanding the skill.

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Rio began practicing the skills one by one. He started with Strength, channeling mana into his muscles and feeling a surge of power. After several attempts, he was able to control the flow of mana and maintain the skill. He then moved on to Haste, which was more challenging due to the need for mental focus. It took him longer to master, but eventually, he could use Haste effectively.

The most difficult skill for Rio to learn was Mana Burst. He spent hours concentrating his mana into his hands, attempting to expel it in a controlled burst. Each failure fueled his determination to succeed. Finally, after countless tries, Rio managed to use Mana Burst, unleashing a small explosion from his hands that shattered a nearby vase.

Exhausted but satisfied with his progress, Rio knew he had to continue practicing to refine his control over the skills. He spent every waking moment honing his magical abilities, driven by his desire to win the duel and escape the toxic environment of his family.

As the day of the duel approached, Rio felt more confident in his mastery of the basic magical skills and the three fundamental skills. He could now use Strength and Haste with ease, and while he was still limited in the number of times he could use Mana Burst before depleting his mana reserves, he believed it would be enough to give him an edge in the battle against his brother.

With his newfound abilities and determination, Rio faced the upcoming duel, ready to change his destiny and carve a new path for himself in this magical world.