Cardcaptor Sakura: Clear Card Arc season 1 episode 21
Episode title: Sakura, the Mirror, and the Key of Memories
Cerberus and Yue meet with Eriol via magic to discuss Sakura's new cards. Eriol has found out that Kaito took something from the magic association he once belonged to, but at that moment, Kaito's magic severs the trio's communication link.
