Sakura, the Mirror and the Key of Memories
Episode 21
Clear Card Episode 21
Air date June 3, 2018
Episode guide
Sakura, Rainbows, and Grandpa
Sakura's Clear Cards

'Sakura, the Mirror and the Key of Memories (さくらと鏡と思い出の鍵, Sakura to Kagami to Omoide no Kagi) is the twenty-first episode of Cardcaptor Sakura: Clear Card Arc.


Sakura is given a ride home with her maternal great-grandfather, but she detects something very unusual along the way that she thinks is another Clear Card wrecking havoc.

Meanwhile, Cerberus is furious at what is happening to Sakura. Eriol looks at the Clear Cards that have been already secured by Sakura. At home, Sakura's gift from her great-grandfather is revealed to be a jeweled, silver key in a red box.

Featured Cards

Clear Cards

Clear Cards Used

Clear Cards Sealed

Featured Clothes and Costumes

Eriol Hiiragizawa


  • It is revealed that Fujitaka was, in fact, aware of his son and daughter possessing increasingly powerful magical strength and unique abilities. Not possessing any such mystical prowess himself, he had always felt left out.


Yue: What of our master?

Eriol: Sakura's magic is very strong, but it is still chaotic. She cannot control it at all. She is unaware of the cards she creates that embody her magic. In other words, she has created her own magical items.

Kaito: I expected no less of Eriol. No wonder they say he is the strongest of magicians living. Still, I will attain these new cards. I will use them to use the relic I had taken from the association, to activate that magic spell.

Syaoran (thinking): Mother and Hirragizawa said the same thing: Power that's too strong will bring unhappiness to its owner.

Sakura: Syaoran-kun?

Syaoran: (thinking): I won't let you be unhappy... I swear it!