This cel, and the one of Terada-sensei and Rika-chan came as a set. I love the deep blue colors of the backgrounds most of all. At first I was a little confused. When I bought them, I assumed that they came from episode twenty-two, when Sakura was chasing the Sleep card. It turns out that they are from the end of the third season when Eriol has put the entire city into a deep sleep.