A/N: I'm not a Dragon Ball Z fan, however Oda-Sensei is and as a homage, I put in a Dragon Ball Z joke. I thought t would be funny with Dragon Balldid exist in One Piece too.Also if you're a Space Balls fan you recognize something Ko says to Gen at one point.

Chapter 8: Ki Battle

Everyone stood there silently… "Need I explain?" asked Ko.

All the Straw Hats with the exception of Chopper as well as Gen nodded, Ko took out a chart and a pointer… for some reason she was now wearing a lab coat.

"Okay, as you know Usa can control her Ki, but there are four ways… plus one side effect, I'll explain the side effect first" said Ko, she pointed to a picture of an angry Usa. "The side effect is that she never hide her angry… literary, she glows when angry and that means she can't hide her anger." said Ko, she turned a page on the chart and pointing to picture of Usa punching someone while glowing "First of the first is power up, she uses her Ki as a booster, it doubles her strength." She turned another page, it was Usa shooting off a beam of pink light "As you seen before this what she calls the Ki Beam… you saw it when she accidentally killed the sea gull…" she said, she once again turned the page, with the picture of Usa using "You saw this as well, this one can actually take a lot out Usa and can weaken her, she only uses it in extreme cases… like when Luffy drank the coffee…" said Ko.

"But you're the one who gave it him" said Zoro.

Ko coughed comically, "Any ways…" she turned to the last page and pointed to Usa what looked she was praying and glowing pink, next to that was picture of Ko, glowing a shade of sky blue. "The last is well what is happening right now, Usa "prays" that the Ki of someone else can be released, when that happens they glow. I glow sky blue and apparently, Luffy glows red. You can use any of the other three but can't use the 4th because that would ruin the point of it. Any questions?" said Ko.

Both Luffy and Usopp raised their hands.

"Other than the fact that why I'm wearing a lab coat? I don't know ether…" said Ko.

Both Luffy and Usopp put their hands down, since it was the question they wanted to ask. Ko wiped the lab coat off and was wearing a completely different outfit, a light blue t-shirt and blue mini skirt, then what she was wearing before the explanation. Much to the confusion of everyone else.

"I had to change I've been wearing the same outfit for the past week." said Ko.

It was true, she hadn't changed in the past week. Gen shouted in surprise as he was cut by many knives and kunai.

"When did you throw them!" yelled Gen.

"When I changed!" said Ko, "You ready Luffy?"

"Yeah… um… what should I do?" asked Luffy.

"Just try and focus your energy into a beam." Explained Ko grabbing her rapier that was thrown earlier in the fight.

Luffy tired to think of what to do… so he tried something.

He cupped his hands "Ka…Me…Ha…Me…" Luffy began.

Before he could launch his attack Ko walked up to him and bonked him the head, everyone including Gen sweat dropped.

"Don't use that attack!" yelled Ko.

"Why not!" said Luffy.

"Because you stole it from Dragon Ball Z! And that's copyright infringement! Copy right infringement!" said Ko.

"So I can't use that?" asked Luffy.

"No of course not, you have to make your own, like my sister has one call (shudders) Sparkly Pink Heart Beam." said Ko.

"How do you that?" asked Luffy.

"Well one thing, it would be Sparkly Red Heart Beam if you did it… but that's besides the point! I have an idea focus you energy into a move that you can do… that's not copy right infringement or a variation of my sisters attacks…" said Ko she sighed "You know… maybe you should just beat him up with your usual thing and Usa can train you when your better if you want."

Gen took this opportunity to kick Ko behind her back, she flew a few feet but she landed her feet.

"You know that was too easy…" said Gen.

"That's it!" said Luffy, "Gum Gum…!" he was about to stretch his arm to do Gum Gum Pistol but something happened, his ki not his arm stretched and hit Gen strait on.

Ko got up as if nothing happened "Looks like you can use your ki like your powers… at least it's progress" said Ko with a sigh.

"Why didn't I stretch!" yelled Luffy.

Ko sighed "Look, your Ki is "Stretching" instead of your arm… it's like 2 as powerful…" said Ko. With a sweat drop.

"Oh…" said Luffy, he tried to think of a name for this new attack, he came up with one "Gum Gum Ki Blast!"

His Ki took the form of Gum Gum Rapid Fire, which knocked out Gen…, almost he was still conscious but couldn't move very well.

With the Straw Hats watching they sighed at the name

"Gum Gum Ki Blast?" said Nami.

"Well at least it's better than "Sparky Pink Heart Beam"" said Zoro.

"He needs to think of better names" said Sanji.

Ko walked up to Gen, and placed her Rapier up to his neck, wear his jugular is.

"Tell me… tell me why you abandoned us…" said Ko.

"Fine then… you see I had a plan when I bought both Devil Fruits, have two woman eat them and bear my children… if one bore a girl and the other a boy then I would have taken you or your sister if one of you were a boy that is… but since both of you were girl's it ruined my plan… I was planning on having you or Usa be a model by the time you got to this age. A Swim Suit model after all you know they say about Cat Girls and Rabbit Girls" said Gen.

Ko's face was full of anger… no full of rage… she was pissed.

"Are you going to kill me?" asked Gen with a smirk.

"No… I don't believe in killing, much like the majority of Kone clan… how ever" she said then had a demented smile "I'm going to make your life a living hell! Say good bye to your two best friends and I don't mean the ones one the ship!"

The Straw Hats knew they had to intervene… Both Sanji and Zoro restrained her while the first mate of the Drunken Pirates and the nurse took him back to the Pink Elephant.

"Perv Master S… Zoro let me go! Let me deal with that perverted bastard!" said Ko.

Before the Pink elephant left, Gen said "I will return… I don't know when or where but I will!" and with that the Pink Elephant sailed away in defeat.

In the girl's cabin Usa stopped praying, she knew that Ko and Luffy had won. She gave a smile.

"I hope Ko trusts them…" she thought.

Back on deck Luffy stopped glowing.

"Hey what gives!" yelled Luffy.

"Like I said it was only temporary" said Ko who regained composure.

She turned to Sanji and Zoro, "Thank you for doing that… I don't what I would have done to him"

The Straw Hats sweatdroped but Luffy, they knew that she would have brutally tortured him below the belt.

Usa came out on deck, Ko saw her.

"Usa, shouldn't you be in bed." said Ko.

"I have a confession to make… I've been hiding something from you and Luffy and the others know about it…" said Usa.

Ko stood there silently, wondering how could her sister hide something from her.

Next Time: Usa tells Ko... how does she take it? I won't say, however one thing is for sure, Ko trusts the Straw Hats and she decides to let the conditions for joining go (except for one name that is...) and she also take a position and it's not Stagiest! You'll never guess in a million years what she becomes! All in the final Chapter of The Rabbit and The Cat!