Another quick idea, enjoy.

Previously...
"SAKURA!" Kero screamed. The spell he was hit with was not ordinary this he could tell.
He could see Yue running towards him which meant that someone cared but just as the tired lion was about to reach out to grab his little brother's hand Yue was pushed from his grasp by another of the spells that he was currently wraped in.
"YUE! Come on you have to fight it!" Yue wasn't rsponding and Sakura was no where in sight. "We're going to die here". He thought glumly. Then as if it hadn't happened at all Kero awoke to the buzzing of an alarm clock...

Present...

"Mmmm... I feel awful." Kero slurred drowsily before rolling over only to find that instead of paws he had feet and hands! Instead of a wild golden mane he had a wild head of golden hair! After finding a mirror Kero observed himself more closely and came to realize that a lot about him had changed. He was now a little blond boy with deep azure eyes just like his master's- but not as dark. He had a strong build and olive toned skin. All in all he thought that he looked like a mini Touya but with blond hair instead of brown. A knock sounded at the door of the room he'd awakened in.
A older woman poked her head in."Oh thank heavens your alright! My husband found you and another little one out back in the ally unconcious and we were afraid you would never wake up!" Stated the woman good-naturedly."Yue, where's Yue! Oh Touya's gonna' kill me if I lost his...!"Kero started to ramble but was cut short."You mean that young lady who was with you, is that her name? She's right next door still sleeping if you wish to go and see her. Is she your sister? Speaking of Touya, you mean Kinomoto right? He's downstairs helping my husband set up shop. I can go get him for you." The old woman smiled pleasantly and Kero couldn't belive his luck. He had a feeling this had to do with Clow given the circumstances."Yes, please tell him that Keroberos needs to see him."
Stated Kero after he'd re-gathered his bearings."Oh, Keroberos. What an odd name.
Alright then Keroberos, why don't you go see your friend and I'll get Touya for you."
"Thanks", he replied before she left. Kero entered the only other room on that floor and was amazed at what he saw. There on the bed wrapped tightly in woolen bed covers was a little girl of probably only ten years of age. She had long wavy bleached blond hair reaching to- looks like- mid-back. Her eyes were closed so he couldn't see their color but he was sure they'd probably be a light blue. She was thin but not gaunt, had angular features that still held the roundness of youth and was very curvy for her apparent age.
He could tell just by looking at her that he and Touya were going to have to beat the boys'
-and Clow's reincarnations- off with sticks. She was beautiful in every sense of the word but the question still burned fresh in his mind,"Why did Yue get transformed into a girl?"
Not aware that he had voiced the question outloud Kero spun on his heels to stare death in the face- again- when Touya piped up in his most annoying tone,"That's what I want to know!" He could tell that Touya was angered and that he'd clearly missed a few nights of...
"Hold it there, rewind!" THEY'D ONLY BEEN GONE ONE DAY! Hadn't they?
"Ahhh... Touya how long have we been gone?"Nearly a week he answered tiredly but still with the same gruff edge to it."A WEEK!" Shouting could be heard from the stairs and the old couple smiled knowingly,"Ah young love". The old man spoke kindly.
It was around noon when Yue awoke to Touya and Kero's fighing but decided not to interfere.
The shop owner gave Touya the rest of the day off and the three walked home in utter silence.
Upon returning Touya called up to his sister,"Oi Kaijuu! Stop moping, I found 'em!"
Sakura ran down the stairs eyes filled with tears of joy at the safe return of her... Sakura stopped her decent once she saw the two were both... human?

If you like leave me a review and THEN, and only then i'll write about their hilariousness when Sakura has to sign them up for school 'cause she can't break the spell!