Kusaki had been led to a clearing in the woods somewhere near Kohona, (incidentally, it is the one in which Naruto fought Gaara.) by Sakura. He got there to find Tsunade sitting on a stump, bare feet in the dirt.

Sakura got off Kusaki and leaned on a tree. (She had, of course, rode him like a horse the whole way.) He went up to Tsunade and looked around nervously.

It seemed like Tsunade was peering into his soul but she said nothing. She just lifted her feet to his face. They were entirely covered with dirt. Sakura spoke "Your final task is too lick Tsunade-Sama's feet clean."

Kusaki couldn't believe it. He was estatic. He was amazed it was so easy. He actually kissed the tops of Tsunade's feet out of gratitude. "THANK YOU TSUNADE-SAMA!" She laughed heartily and looked up "Don't thank me yet...."

Without delay he started. It was terrible, but he knew it would be the last. The taste of dirt was almost sweet, and the girls knew he was trying harder than ever to clean her feet. After ten minutes, the dirt was starting to come off, and from the girls smiles he knew it was all over his face.

Unfortunately for him, it had begun to rain a few minutes ago. Tsunade and Sakura made a jutsu to divert the rain from them, but left Kusaki to get soaked. Thankfully, it had lasted only a few minutes, but it was enough to turn the whole field of dirt to mud, which he now knelt in.

He finished cleaning her ball and arch, and vigorously sucked her heels. The girls giggled as he began to suck the dirt from her heels. He looked like he had pushed his face into chocolate ice cream.

Finally, he cleaned her toes in his mouth. He sucked like he had never sucked a toe before. He actually went up and down as he went, putting Sakura into stitches, as he looked like he was doing something else entirely.

Soon, it was done. Her feet were spotless. She examined them closely. Kusaki got up and yelled "I'M FREE." while he stood elated, he felt Tsunade poke him. "Hate to spoil the fun Kusaki", she started, as she let down her blond hair, which glowed in the sun. "It's just that there's one little thing you still haven't done...." and with that, Tsunade poofed into nothingness.

Sakura was laughing like a witch. Kusaki went up to her, still intimidated by her, but now determined to act like a man "What? What the hell is she talking about."
Sakura tried to reply, but was interrupted by a massive release of Chakra. He saw over two hundred clones of Tsunade in the field, all looking at him with those dominiant eyes. All barefoot.

All their feet in the mud.

Sakura finally stopped laughing enough to reply "You...you...Still have to lick the REAL Tsunade-sama's feet clean!" and she broke down again.