Yue stands serenely beside Sakura's dresser table in her room, he's unable to return to his borrowed human form, Julian, possibly due to a powerful spell having been cast on him by someone very very powerful. Cerberus is currently grumbling away in the corner about how annoying this is and how worrying it is that neither of them can return to their borrowed forms.
They were originally in the park, Penguin Park, trying to locate the source of the powerful magic Sakura, Yue and Cerberus can feel. They had been there for a few hours, but to no avail as they could not find the source of the magic. Yue was certain the magic he could feel felt familiar...like it belonged to someone he knew very well. But he could not put his finger on it. After it had begun to rain, Sakura, Madison, Yue and Cerberus had run home to avoid being soaked, they had said goodbye to Madison on the way back as she needed to get home as well. Now they're in a predicament, Sakura's brother, Tori, and her dad cannot see Yue or Cerberus like this, after all neither of them know about Yue or Cerberus, or even of Sakura being a Cardcaptor.
As he shakes his head a little at the predicament, he sighs as he is a little wet from the rain but it is of no concern to him as he cannot catch colds like a human can, after all, in his true form, he is not a human, he is a Guardian Angel of the Clow Book. Yue's power comes from the moon, and thus he cannot be self sustained for long, and he cannot rely on Sakura's magic as she is not yet powerful enough to fully sustain him, however Sakura is not aware of this fact.