Chapter Ten: The Keeper's Oath

With the leader of the "Shadow Hand" subdued, the clamor of battle gradually subsided. Henry, Emily, and Caspar stood in the center of the circular room, their hearts filled with a mix of emotions. Joy at their victory was intertwined with uncertainty about the future, but they knew they had averted a disaster that could have rewritten history.

Professor Edmund approached them, a hint of weariness in his eyes, yet more of relief. "You've done well," his voice trembled slightly, "It is you who have protected the Gate of Time and Space, you who have protected history."

Henry clenched the keys in his hand, feeling an unprecedented sense of responsibility. "We will continue to guard this place and ensure the Gate of Time and Space is never misused again."

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Emily and Caspar echoed the same resolve. They knew that while the battle was over, their mission as Keepers had only just begun.

The professor nodded, pulling out an ancient book from his pocket and handing it to Henry. "This book records the history and knowledge of the Keepers. Now, I entrust it to you."

Henry accepted the book, his heart filled with awe. He knew that this book was not just a transmission of knowledge but also a passing on of responsibility and mission.

In the days that followed, Henry, Emily, and Caspar embarked on a new journey. They studied the knowledge of the Keepers, explored the secrets of the "Ghost Library," and continued to search for the remaining keys.

They also became the new generation of Keepers, guarding the Gate of Time and Space to prevent its misuse. Their story spread among the Keepers, becoming a legend.

And deep within the "Ghost Library," the Gate of Time and Space stood quietly, its surface shimmering with a faint light, as if telling ancient secrets. Henry and his companions knew that behind this door lay endless possibilities, but they also understood that some doors should never be opened.