A/N- This is my brand new story! It's going to be funny, mainly, but there will be fluff, don't you worry! I have most of this planned in my head, and the next chapter is being beta-ed! So give praise to the almighty Y-Kira for being such a great Beta, go give her cookies right now!

Disclaimer- Alas, tis not mine, nor will it ever be!! I cry I weep, I am inconsolable!

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The Kitten Experiment

Yagami Sayu was not a genius. She did not get straight A's, has never been at the top of her class, and does not have perfect attendance; But when her brother is accused of being Kira, she takes it upon herself to find something, anything, to clear his name.

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It was 3:00 in the morning and Ryuzaki was, of course, working, as he normally did. The office was quiet, everyone else had gone home, as usual. So when his phone, which he had forgotten about entirely, vibrated in his pocket, he was understandably frightened. Picking himself off the floor, no he had not fallen, he did in fact like the floor, and he held his phone in his odd way, scrutinizing it unhappily.

" Who on earth," he murmured, " could this be?"

He opened it and held it near his ear.

" Hellooooo?" he said carefully.

" Umm, is this Mr.L? The head of the Kira investigation?" asked a small girlish voice.

L's mind went into overdrive, calculating the percentages of this being a prank. 2 percent. A threat? 45 percent. That meant…

" Mr.L? I'm Yagami Raito's sister, Sayu. You never met me, but I have a proposition for you. Is my brother by you? He should be sleeping, don't let him hear you, okay? He'd be mad if he knew I was doing this."

" Yes, he is asleep." His eyes wandered over to the couch where Raito was sprawled, snoring slightly. He moved, crab-like, down the hall.

" Okay, he can't hear you? Good. Can I meet you somewhere private? I would like to do this now, but if you can't then we could do it after I get out of school tomorrow. This is really important. I have a way to prove my brother isn't Kira."

L's mind, which had begun to quiet down, fired right back up again. How could this be, did she have evidence of the second Kira? Did she know the second Kira? What if –

"Yes", he intoned, " I will meet you in-"

"I'm already outside the building", she interrupted, "and you should come down now, okay? I have to get back before Daddy wakes up."

L heard himself say yes, he would be right down and no, she could not see Raito. He got up and walked toward the stairs, pausing to handcuff Raito to the arm of the couch. As he walked down the stairs, his mind whirling with percentages and figures, he wondered what on earth he was getting himself into.

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A/N- Soooooooo, here it is, a little teaser for you! I'm just testing this out, so I need feed back! Tell me what you think, okay? I need your help to make this work! Don't make me send my Fat Cat after you! She will fluff you death!