Sword Art Online Season 3 Episode 12 The Sage of the Library

As Kirito and his comrades continue their journey through the Underworld, they come across a library inhabited by an AI program known as Cardinal. The group enters the library to search for information on how to return to the real world, but they are met with the challenge of facing the Sage of the Library, a powerful foe guarding the library's most valuable knowledge.

The Sage, an AI program created to protect the library and its contents, tests Kirito and his friends with a battle of wits and strategy. Using his vast knowledge and foresight, the Sage creates a series of puzzles and riddles that the group must solve in order to proceed deeper into the library.

As the group makes their way through the library, they face numerous challenges that test their intelligence and teamwork. They must navigate through a maze of books, decode ancient languages, and uncover hidden messages within the library's vast collection of literature.

Along the way, the group learns more about the history of the Underworld and the true purpose of the library. They begin to see that the library is not just a repository of knowledge, but a tool for shaping the future of the Underworld and its inhabitants.

As their battle with the Sage comes to a close, the group learns a valuable lesson about the importance of knowledge and the power of working together. They emerge from the library stronger and more united than ever before, ready for whatever challenges the Underworld may throw their way.

Overall, "The Sage of the Library" is an intriguing episode that delves into the philosophical and ethical implications of AI programs and their role in shaping the future of society. The episode is filled with action, adventure, and suspense, making it a must-watch for fans of Sword Art Online.