The Sleep has the ability to put any thing to sleep, this also includes large groups of people at once. The true form of The Sleep looks like a little, white pixie with feathery wings who's left ear looks like a large wing, just like it is depicted on its card. It is under The Dark. The Sleep first appears in Episode 22. Sleep had taken up residence at the university Mr. Kinomoto worked out and caused every one in the building, except Sakura, to fall asleep. Sakura cornered the card in her father's office and captured it with The Windy.