A small spider familiar belonging to Cardinal is introduced, having been observing the boys since their early days at the academy. Narrative Impact

Acting as a mentor and guide, she provides the necessary exposition to help Kirito understand the true nature of their world and the enemy they face.

The trio establishes a clear plan: reach the 100th floor of the Cathedral, reclaim Kirito and Eugeo's confiscated swords, and use special daggers provided by Cardinal to "reset" the Integrity Knights' memories. Key Character Roles

This episode is noted for being heavy on dialogue and exposition, adapting a significant portion of the Sword Art Online light novel (Volume 12, Alicization Rising ) to explain complex concepts like System Control Authority and the Taboo Index. It concludes with the two protagonists resolved to begin their literal climb through the Central Cathedral.

Cardinal forms an alliance with Kirito and Eugeo. She reveals the truth about the Integrity Knights —that they are not legendary heroes summoned from the heavens but humans whose memories have been stolen and replaced by "Piety Modules".