"I must provide some context for you to comprehend his might," Itachi began. The students and teachers in the grand hall leaned in, eager to hear more.

"Toji Fushiguro was an enigma. He had no magic nor sorcery, yet he was equipped with incredible physical prowess, a result of his heavenly restriction." Itachi explained.

"Our first encounter was abrupt and brutal. Despite my Sharingan and techniques, Toji's speed and strength were so fast, I found myself at a considerable disadvantage," said Itachi.

"In that fight, I died." Itachi stated, causing a murmur of disbelief to ripple through the grand hall. "But as I said, I had mastered the reversed curse technique."

"Healing myself from the brink of death, I prepared for a rematch. I knew the crushing sense of defeat wouldn't leave me until I defeated Toji," Itachi added.

"Our rematch took place under a full moon. I was prepared, having studied his fight style in our first encounter. This time, I used my Hollow Purple. It worked," Itachi said.

"Despite defeating Toji, I couldn't relish my victory. He was an ordinary human, yet he proved to be one of the fiercest opponents I had ever faced," admitted Itachi.

Ron exclaimed, "A Muggle outmatched you? That's just unbelievable!" Itachi simply smiled and nodded, and let the students absorb the information.

"After Toji, I faced another formidable opponent. This one, however, was a beast of a different kind - Ryomen Sukuna, the King of Curses," Itachi began.

"Sukuna was a curse, a malicious entity that fed on negative emotions. He was ruthless, savage, and commanded tremendous power," Itachi described.

"Out of all my battles, the fights against Toji and Sukuna stand out the most. They both pushed me to my limits, and for that, I am grateful," Itachi concluded.

Harry said, "It seems like you've had quite a journey, Itachi. We could learn a thing or two from your experiences." Itachi just nodded in agreement.

Hermione asked, "Is there any advice you'd give us, considering all you've been through?" Itachi thought for a moment before responding, "Grow stronger, not for battles, but for the ones you wish to protect."

"Power is a tool. It can be used for destruction or protection. The choice is yours," Itachi concluded. His words echoed through the grand hall, imprinting on each person present.

The students and teachers were silent. Only the crackling of the torches disturbed the profound silence that had fallen upon the grand hall. Itachi's words had made a deep impact.

Luna Lovegood, a wild-haired, dreamy-eyed student who was also Itachi's wife, spoke up. "Itachi, you've fought so many battles. You've faced death and defeated it. Your strength is inspiring."

Itachi merely smiled at Luna's words. Then he said, "Luna, my strength is nothing compared to the love that we share – it's the most potent magic of all."

"But I would not have been able to protect what matters most to me without the trials I faced. Those battles were not just physical battles but also a war within my heart," Itachi added.

"Each of us has battles to fight, enemies to face. We might not see them, but they're there. And each victory, no matter how small, strengthens us for the next battle," Itachi concluded.

"That's why, even though I lost to a Muggle and a curse, I am not ashamed of those defeats. Because these losses have shaped me into who I am today," Itachi said with conviction.

The grand hall erupted into applause. Itachi's humility and wisdom had earned him the respect of each person present. "Thank you, Itachi. For sharing your story, your battles," said Harry, clapping loudly.

"I hope my stories have taught you something worthwhile. And remember, always strive to protect those close to you. For that, any battle is worth fighting," Itachi concluded.

With that, Itachi, the legendary shinobi and wizard, ended his tale. The grand hall was filled with applause and contemplation, Itachi's words echoing in everyone's heart.

Luna rushed up to Itachi and gave him a warm hug. "I am so proud of you," she whispered. "And I love you more than words can say." Itachi held her close and returned her sentiments.

As the applause gradually died down, Itachi and Luna exited the grand hall hand in hand. The students and teachers left with a lot to ponder, the tale of Itachi's battles to be remembered forever.