It was just a normal day in Soul Society. Yachiru was relaxing in the 11th Squad's barracks as someone approached her from behind. She looks back as she is eating a Popsicle. she stares up and realizes its Captain Kurotsuchi.

"Hey Clown Man! Whats up?" she asks smiling as she sucks on the Popsicle.

"I told you to stop calling me that!" he shouts scolding her. "At least call me Captain you brat." Yachiru simply turns around looking at the other shinigami training. "Are you even listening?" He asks

"No" She replies "You know....your not funny for being a clown and all." she comments making Kurotsuchi more upset, to the point he grinds his teeth.

"Well anyway, since Nemu is away on an eron , I need a guinea pi......I mean an assistant for one of my experiments." Kurotsuchi says as he tries to maintains his cool. "I was wondering if, you would like to be that assistant." he says smiling wide."Yes cause in this experiment I can get payback for your insolence" he thinks to himself.

"Hmmm...no thank you." Yachiru replies

"You will accept my offer?! Splendid child! Lets hurry we don't have time to waste." He said as he grabbed Yachiru's arm ,and drags her away as if she was paper in the wind , to the Science Bereau Head Quarters.

"But I said no" Yachiru protested flailing her arms up and down in the air.

"Nonsense, I heard you say OK and thats that."

---------Science Bereau Head Quarters----------

Yachiru is seen in a small chamber surrounded by glass . She looks on pressing the glass with her hands. "Is this gonna be fun?" she asks Kurotsuchi.

Why yes it will, tons of fun." he replies. "Well for me anyway " He thinks to himself as he does a sly smirk. "Let me explain the experiment. I have lots of blood samples of various people. I'm trying to figure out if I can give a shinigami a boost of power by combining their DNA with someone elses. Its rather fascinating if you think about it don't you think.? The endless possibilities if i succeed." He looks over to Yachiru and she is sleeping while standing in the chamber snoring.

"ZZZZZ...Phew.....ZZZZZ...Phew" can be heard from her as a large bubble comes out of her nose as she sleeps.

"Wake up damn it!" he yells loudly waking her quickly. "We are possibly on the path to great discovery, now where are those samples?" He looks around for the samples and finds them. However he discovers they are not labeled. "Idiots! They didn't label the samples.....Oh well i will just figure it out as I go." Kurotsuchi said as he flipped the switch and turned the machine on. he places the first sample in and smoke begins filling the chamber.

"Clown man its getting cloudy." Yachiru says as she begins coughing.

"Everything is fine , its supposed to do that I think." he replies as the smoke fills the chamber completely. soon the chamber glass slides up and the smoke escapes. Kurotsuchi looks on in anticipation. "Did it work?" he asks

"Not sure Clown man. " she replies as the smoke fully dissipates. Yachiru now has Yourichi's body type, but with a few differences. Like the hair was still pink and she still retained her voice and eyes. She looks down at herself in amazement, as her eyes sparkles with stars in them as she looks in a mirror. " I have boobies! Yay!" she shouts as she grabs them and jiggles her breasts in her hands "They are so soft and squishy" she comments.

"Stop that and get back in there" Kurotsuchi says palming his face. Yachiru nods and gets back in the chamber still juggling her chest. "Obviously that was Yoruichi's sample. You also seemed to have retained her perverted characteristic as well." The glass slides back down over the chamber, and he inserts another sample into the machine. The smoke fills up the chamber again.

"Is this gonna happen all the time?....ack..... ack" Yachiru barely asks as she starts coughing.

"Yeah probably , now stop complaining" he says grinning wide pleased with the first test. It opens again and Yachiru steps out. This time she has taken the appearance of Rukia with pink hair. Yachiru she looks at herself.

"Aw I'm flat again"

"Oh brother....." Kurotsuchi says then sighs. "Now then lets continue "

--------1 hour later---------------

Yachiru can been seen as smoke fill the chamber that she took the appearance of Head -Captain Yammamoto with a pink beard. "Wow so thats what it feels like to be a really really old man." she comments " I was all cranky and full of gas." she said giggling

"I reckon so now only 3 samples left." Kurotsuchi replies as he inserts another sample , but his elbow hits the tray and knocks the other two samples in with it. The machine begins to burn at certain areas and then the chamber explodes. Kurotsuchi looks on as he sees lots of smoke cause by the explosion. He soon sees a figure through the smoke. he coughs as the smoke catches up to him and he covers his mouth.

Ack ...Yachiru?....what has happened?" he asks. Suddenly he hears a male voice he wasn't expecting . It was that of Aizen's. "This can't be Aizen here? Impossible!" he shouts as he soon hears the voice again.

Aizen?!.... who are you calling Aizen Clown man?" The smoke cleared and Kurotsuchi couldn't believe his eyes at what he saw. It was Yachiru...however her appearance took him by surprise. She had Rangiku's body , Aizen's face and voice and Unohana's hair style but pink. "This isn't fun, I feel all weird! Change me back Clown man " She yells loudly in protest in Aizen's voice.

"Change you back ? Now why would I do that? Your a scientific don't you know that!"

"If you don't change me back, I will tell Kenny and he will kick your ass." she says flailing her arms again.

"Oh I would like to see him....."and that when it hits Kurotsuchi. If Kenpachi was to come there countless experiments would be ruined due to the destruction. "OK OK give me a few hours to fix the machine" he says sighing. "This experiment proved we can change DNA but it didn't increase reiatsu any. This was a failure after all." he muttered to himself. as he began fixing the machine. Eventually it was fixed and Yachiru was back to normal ......mostly......

-------------------later at Byakuya's Manor-------------

Yachiru is then seen jiggling Rangiku sized breasts on her body in Rukia's room. "Jiggle jiggle" Yachiru says as she plays with them happily. Rukia squints her eyes as she looks at Yachiru with one eye twitching.

"Now that not fair" Rukia thinks to herself

(I have decided since this story is such a success that I will update it every 1-2 weeks. I hope you guys will keep reading And thanks for reading as well)