A/N: Yo! This is my first Death Note story :)

Read and review :D If you're going to flame me, then I'd rather you put some constructive criticism in there, so I can make this story better. If you don't like the story, then don't say anything at all and don't bother to continue reading it — it's that easy :)

But, for now, enjoy ;)

DISCLAIMER: I do not own Death Note.

NOTE: The following events (most of it) occur sometime between episode 11 and 12 :D

.:: Prelude ::.

"There have been thirty-eight more killings earlier today. The Japanese police seem to be in a tight spot as they try to uncover the identity of mass murderer, Kira. . ."

There was a click and the television was turned off.

"Is there something wrong, Hikari?" a woman asked, turning around to face her companion.

The black-haired girl repositioned herself on the sofa, folding her legs beneath her. "No," she responded. "The news doesn't have that much to tell us, does it, Akane-san?"

Akane raised her brow and spoke slowly, measuring her words. "About Kira? Well, this has been going on for quite a while; I don't expect them to have anything new at the moment."

Hikari pouted, pondering. "I guess not. I should be one of the first to know if there was anything new, anyway," she muttered.

"What's that, dear?" Akane asked.

"Oh, nothing, Akane-san. I think I should go to sleep now. A teenage girl like me shouldn't be staying up late at night, ne? It's bad for my health." Hikari ran her fingers through her silky, ebony locks as she stood up. "G'night!"

Akane watched Hikari walk towards her room. And I was so sure that I could handle being this girl's manager, she thought.

In the bedroom, Hikari flipped open her phone and dialed a number. She spoke as soon as the person she was calling had answered. "Nii-chan, I wanted to talk to you. . . .Oh, yeah? Tomorrow? Sure, that's fine. I'll see you the day after, then."

- - -

Shimizu Hikari sat cross-legged in front of the TV.

"Hikari, watching the news again?" Akane, Hikari's manager, asked.

The girl kept her eyes on the television. "Yeah."

Akane sighed. She knew that once Hikari started answering in monosyllables, the girl wouldn't be so responsive until whatever was keeping her attention was over. The woman still tried though. "Ne, I thought we were going to meet with some big Japanese producer, isn't that why we flew all the way here?"

Hikari reached out to grab a piece of candy by the end table. "That's right."

"So when are we planning to meet up with the guy?"

The girl didn't respond. She raised one of her brows as the screen of the television turned blank and a single name appeared: KIRA. A distorted voice started to speak, claiming it was Kira.

"Pathetic," scoffed Hikari.

The girl's phone rang then, causing her to jump slightly. "Moshi moshi?" she asked as she flipped the phone open and put it next to her ear. "Ah, nii-chan! Hai, I'm watching it right now. . .Sure, I'll go and visit you tomorrow, it's no big deal. Ja!"

- - -

"Yagami-san, would it be alright if I asked your son to work with us?" L asked, tracing his lower lip with his thumb.

Aizawa and Matsuda exchanged anxious looks as Chief Yagami Souichirou replied, startled, "Does this mean that he's one hundred percent cleared of suspicion?"

L reached out for his cup of tea. "No, I can't say that. . .But I do think that he has very good reasoning abilities."

"Well, if my son agrees to it, then I am under no obligation to stop him," said the Chief.

"Arigatou gozaimasu. However, we will keep the fact that this Kira might be fake a secret from him," L added, moving his thumb across his lips. "Let us act as if we suspect there to be only one Kira."

At that moment, Watari entered the room. "Pardon the intrusion, gentlemen," he said, before turning to L. "Ryuuzaki, you have a visitor."

The three police officers exchanged curious glances at each other. Aizawa muttering, "Visitor?" while Matsuda and Chief Yagami remained silent.

"Thank you, Watari, let her in," L said.

Watari disappeared and a young girl entered the room. She couldn't have been any older than fifteen. Her hair was long and black; it was arranged into a neat ponytail, leaving her side-swept bangs to bounce slightly with her every step. Her eyes were dark brown — almost black. Her mouth curved at the end, but only by a small degree.

The silence in the room was broken by Matsuda's gasp. "Shimizu Hikari!"

L grinned sheepishly. "Minna-san, this is Hikari, my sister."

Hikari spoke, "Yo."

Matsuda's eyes widened and when he spoke again, his tone was that of astonishment. "Sister? Shimizu Hikari is Ryuuzaki's sister?"

The girl raised her brow. "You haven't told them yet, nii-chan?"

Aizawa and Chief Yagami spoke in unison, "What's going on, Ryuuzaki?"

"Calm down, Matsuda," L said, before turning to speak to the rest of them. "As I said, she's my sister. Recently, she's been. . .helping me gather information with regards to the Kira case."

"Her?" Aizawa scoffed. "She's only, what, thirteen? Ryuuzaki, how could she possibly help with the case if we can't even figure out who Kira is?"

"I'm fourteen, if you must know," Hikari reprimanded. "And I know a lot more than you could possibly—"

She was cut off as L shot her a warning glance. "Aizawa, please calm down. If you could give me a moment to explain. . .?" L paused, continuing only when Aizawa nodded reluctantly. "Hikari has been helping — no, that's not it. You see, I've been training her to be my successor ever since she was little. She's been solving low profile cases for quite a while and is very good at it.

"She's here because I requested her to assist me in this case. She also has some rather interesting theories about how Kira is able to kill, and I'm sure that we could use this extra knowledge to our advantage. Please, don't underestimate her capabilities just because of her appearance and age." L took a sip of his tea, ending his monologue with a tone of finality.

Hikari then spoke slowly, looking intently at each of the police officers. "I'm really sorry about this inconvenience. I'm not sure how to put it, but I think that I know exactly how Kira is murdering all these people. But. . .the thing is, I haven't got the proof. Nii-chan's allowing me to join this investigation so that I may possibly prove my theories right, or, at least, bring us one step closer to finding Kira."

"As much as I would gladly welcome another helping hand in this investigation, I have to ask. . ." Chief Yagami said, tentatively. "You are known throughout the entire world as the actress, Shimizu Hikari, am I correct?"

Hikari nodded.

Aizawa, catching up on the chief's train of thought, said, "Wouldn't it be dangerous for you? I mean, if Kira finds out that you are investigating the murders, wouldn't he be able to kill you? Since he knows your name and face?"

A smile spread on Hikari's face. "You're very perceptive, Aizawa-kun, but I am in no danger."

"How is it that you're not under any risk?" Matsuda said, having recovered from his earlier shock. "I thought that Kira could kill anyone just by knowing their face and name."

Hikari laughed. "Kira may know my face, but what he doesn't know is that the name Shimizu Hikari is an alias." She paused, pondering. "The other Kira, though, may be a problem, since I'm under the assumption that this one can kill by seeing only the person's face. . ."

Everyone became quiet, except for Matsuda who said, "Sugoi! Hikari-chan, you came up with the same deduction as Ryuuzaki! You must really be his sister!"

"Matsuda! Will you act like an adult for once?" Chief Yagami sighed.

L sat quietly, assessing all that's been happening.

"Ryuuzaki, how are we sure that Hikari isn't Kira?" Aizawa said, frowning.

L looked at Aizawa for a moment. "Are you saying that my sister is Kira?" he said in his usual amused-but-still-indifferent tone.

Chief Yagami joined in at the new turn the conversation took. "It's a possibility, Ryuuzaki."

L turned to face his sister. "Hikari, are you Kira?"

The others went wide-eyed at L's bluntness.

Hikari's expression turned serious. "If that were so, don't you think you would have died already, nii-chan?"

Aizawa was about to retort, but Chief Yagami beat him to it. "I agree with that. And, no offense, Hikari, I don't think you look like a person who's capable of mass murder. You'd have too much to lose and nothing to gain."

"Too much to lose, huh?" Hikari muttered.

This time, Aizawa was able to speak. "The chief is right."

Matsuda piped up as well, "Besides, Ryuuzaki concluded that Kira was hiding in Kantou, didn't he? And up until a few days ago, Hikari-chan was in America." This piece of knowledge surprised the others.

L nodded. "Matsuda's right. Hikari only knew about the killings when I contacted her after I had my suspicions of a murderer, but she didn't witness the broadcast involving Lind L. Tailor until I sent her a file of that video a few days after."

Aizawa sank back into his seat. "I see. . ."

"So, now that I'm cleared, what's this business with Yagami-san's son?" said Hikari, surprising the officers at her business-like tone.

After that, the atmosphere turned comfortable as Hikari joined them in planning and settling the invitation for Yagami Light, the chief's son, to join the investigation. Every now and then, Matsuda exclaiming his amazement at the many things Hikari knew.

None of them has it, Hikari thought as she looked at all of them. So who does?

- - -

The next day, everyone prepared for Yagami Light's arrival.

"Thanks, Yagami-kun," L said, shaking Light's hand.

Light smiled. "I also wish to capture Kira, Ryuuga."

"Please call me 'Ryuuzaki' while we're here," L explained.

Huh, Light wondered.

Matsuda, Aizawa, and Chief Yagami then introduced themselves using their code names: Matsui, Aihara, and Asahi.

Light's gaze lingered on the girl that stood out from this group.

"I'm Shimizu Hikari," she said, smiling wide.

"Shimizu. . .Hikari? The actress?" Light repeated in confusion. He had recognized her face, but he didn't understand why she could possibly be here.

"Hai, I'm also Ryuuzaki's sister," she added nonchalantly, her eyes narrowing slightly as she took a closer look at him.

L's sister? Light thought in amusement as well as irritation. L's crafty. If she really is his sister, then he can conclude that I'm Kira if she ends up dead shortly after I meet her. Shit, this is going to make everything harder, especially if she knows all of L's suspicions about me. . . .Why the hell is she staring at me like that?

Light's attention was diverted as L said, "I'm going to call you 'Light-kun' from now on. Well then, please take a look through the Kira-related evidence that we've gathered so far" — L led him to a table stacked with files — "along with this unpublicized video that was sent to a TV station. Taking any of these documents outside and/or writing notes about them is not allowed," he added.

"I understand," Light replied. From behind him, the shinigami, Ryuk, cackled. What's got Ryuk so amused? Light wondered.

As the others positioned themselves a few feet behind the chair Light sat on, Hikari pressed her lips together so that they turned into a thin line. "Nii-chan," she muttered, tugging at the sleeve of L's shirt.

"What is it?" he asked.

"Before Light watches the video, may I speak to him? It's not about the video," Hikari added, a pleading look in her eyes.

"Go ahead."

Hikari walked over to Light, feeling the eyes of the others boring into her back. "Light-kun," she said, lowering her voice into a whisper so that only he could hear.

"Hikari?" Light raised a brow.

"After this, is it possible for me to talk to you alone? Well, 'alone' wouldn't be the appropriate word since Ryuk's going to be there; but, I think you get what I mean?" Hikari said, her tone solemn.

The shinigami behind Light cackled again, louder this time.

Light's expression turned grim, his thoughts swerving out of control as his mind absorbed the girl's words. She can see Ryuk? He thought. Who the heck is this girl?

A/N: This is short, and a bit vague, yes. But all will be explained later on.

Have any questions? Feel free to ask :) If you have suggestions, I'd rather that you send them to me via PM :D

So, L has a sister, and this story will more or less revolve around that fact and some others.

Don't forget to review, okay?

Adieu for now,

Yuuki :3