Pu pu puuuuuuuu or Umi and Mokona
Mokona opened his eyes and looked around. "PU!" he said when he saw that the Magic Knights were still sleeping. Mokona bounced quietly over to the bed where Umi slept. Springing up in a high jump, Mokona landed right on Umi. "Pu pu puuuuu pu pu!" he happily cheered. Umi leapt right after Mokona.
"GET BACK HERE YOU ANNOYING LITTLE RODENT THINGY!" she screamed at the top of her lungs as she chased Mokona around with her pillow. The now awake Hikaru and Fuu ducked their heads as Umi ran past, swinging her very blunt object.
Fuu rubbed the sleep out of her eyes, "Mokona, next time wake us up first. We can wake up Umi safely."
"PUUUUUUUUUUUUUUUU!"
"Uh huh," Hikaru told Umi, "Mokona only does he because he likes your reactions, Umi. If you ignored him he would stop." Hikaru whispered to herself, "I can understand about how much fun it is to tease someone sometimes."
"Hmp!" Umi grunted and turned away from Hikaru and Mokona and folded her arms.
After a filling breakfast (somehow provided from that jewel on Mokona's head), the three magic knights left on the road again. They walked quietly through the dense forest.
The silence was broken by Umi screeching as she tripped and fell flat on her face. She propped herself up and spat out some dirt. Muttering, Umi said, "I'm going to get that bouncing marshmallow if it the last thing I do."
Hikaru and Fuu looked down where Umi's legs were on the ground. Trapped under a foot, but making no serious effort to get out, was Mokona.
In a blur, Umi was on her feet and turned around, reaching for Mokona. Fractions of an inch in front of Umi's grabbing hands, Mokona moved, shooting off for the bushes. Umi dove after the rabbit like guide and became stuck in the bushes. Her lower half of her body stuck out of the bushes. Mokona squirmed out of the lower part of the bushes and made a pleased sound.
Fuu, sensing that Mokona had a plan, said, "Uh, Mokona, are you sure that's a good idea?"
Mokona tipped his head, as if he was thinking. With a satisfied nod to himself, he leapt up right under Umi's skirt. Umi let out an animalistic yell and tore herself from the bushes. She looked around for Mokona; a feral look graced her face.
"Where. Is. He?" she asked slowly.
Hikaru and Fuu sweatdropped. They pointed down the path at the rapidly disappearing white speck. With inhuman speed, Umi launched herself forward, ready to prepare a feast of roasted Mokona.
Hikaru and Fuu ran to catch up with their enraged friend. Fuu said, "At least Mokona has headed off in the direction we need to travel."
Hikaru nodded her head in affirmation. A surprised expression and then admiring expression crossed her face, "Wow. Look at Umi run! If she keeps going like that we should reach the Spring of Eterna in no time!"
When they finally caught up with Umi, she was lying on the ground, panting. She wore a dazed expression. "Did I get 'im?" she asked.
Kindly, Hikaru and Fuu helped her stand. Lying through her teeth, Fuu told Umi, "You got him, Umi-san."
Fortunately, the dazed Umi believed her.
I have no idea if Mokona is a he or she but I get the impression the Mokona is a he.
Disclaimer: Magic Knight Rayearth belongs to Clamp, not me.