I can't make a review out of this OVA, this special episode is just the actual end of Cardcaptor Sakura first arcs. For those who haven't read the manga, the anime (and second movie) had a different ending, so this is how Cardcaptor Sakura manga ended. I'm really glad that they made an OVA for this: the art, the eyecatch, the soundtrack, the VAs are all the same as in the old series, it really took me back in time. If you enjoyed Cardcaptor Sakura you have to watch this OVA, forget episodes 69-70 and watch this. It wraps up everything nicely and it's the perfect prologuefor Clear Card arc.
I absolutely loved it and I can't wait for 2018 to watch the next arc! (even though I'm reading the manga)