(Cardcaptor Sakura) The Observer

One day, the lazy Xia Sha suddenly felt like rereading the entire Cardcaptor Sakura manga. After buying two sets of cards from Taobao, they excitedly started unpacking the boxes. The moment they saw the cards, the sun and moon vanished and everything turned dazzling (not really). They actually transmigrated into the world of Cardcaptor Sakura and became a little kid. It was infuriating. Of course, they still had both sets of cards with them (not the ones Sakura had, but the ones from Taobao), and spent their days getting along wonderfully with the cards as they waited and waited and waited and waited for the story to begin. Then, when it finally did, they suddenly discovered they could transmigrate into the cards that had been released. What a strangely thrilling feeling.

In this setting, Yue and Yukito can separate, like two souls in one body.