-I don't own Death Note nor Detective Conan, which this was inspired by. They belong to their respective owners -

Wammy's House does not exist in this.

When best friends and housemates Matt and Mello took young Ryuuzaki Rue in, their only thoughts were how happy they were that their landlord Roger had lowered their rent because of their 'kind' action. They thought taking care of the boy would be easy. They had both taken care of young children before, Matt having younger siblings, and Mello being forced to babysit by his parents, because they refused to pay for all the chocolate he wanted.

But Ryuuzaki was not like any of the other children they had to look after. The six year old was much more mature, and while he sometimes pretended to be a normal kid around strangers, he most certainly was not. He did have the usual love of candy and other sweet foods, but his love for it surpassed that of Mello's love for chocolate, and with all the money they were spending on Ryuuzaki's candy, cake and fruit, Mello's chocolate and Matt's junk food, gum, and when they could, video games, they probably would have been better off paying the full rent. Their were also Ryuuzaki's strange habits, that both had given up on trying to break. If the kid wanted to have a permanent slouch, they wouldn't stop him.

They liked having the kid around though. But now wasn't one of the times.

"Ryuuzaki! You almost got us arrested!" Mello screamed at the raven haired boy. Ryuuzaki wasn't at all bothered by this, and continued to chew on the stick left over from his lollipop. He gazed up at Mello with uninterested eyes, which caused the blond to sigh and hang his head. There had been some talk of putting him into anger management classes if he didn't learn to control his anger by himself, and it was something that he didn't want to go through.

Matt continued on for Mello.

"A crime scene is not the place for a child. You're lucky that we hanged around for as long as we did. I know that you're interested in the solving of crime, but entering the crime scene itself was going much too far."

Ryuuzaki wished briefly that he could tell them the truth, just to see how they would react. It would be interesting to tell them that he was L, the famous detective they idolized.

When trying to solve his newest case, he had decided to actually go out to the scenes of the crimes. The criminal he was after was actually a whole organization, known to the world as K.I.R.A. No one knew what each letter stood for, but there was much speculation (Killing is Really Awesome?). K.I.R.A. specialized in a poison that caused heart attacks. When he was caught by one of the members, he was fed the poison.

But instead of causing him to have a heart attack, he woke up to find himself shrunken into a young child. This led him to believe that all the heart attacks were caused by the shock the body went through when it started shrinking, and the person died before they shrunk noticeably. The questions he had been unable to answer were how he had survived, and how the poison shrunk the body in the first place.

He had been lucky enough to come across an old friend of his adoptive father and butler of sorts, Quillish Wammy, better known to him as Watari. He managed to convince Roger that he really was L, and was able to contact Watari and tell him what happened. Watari had advised him to stay low, and because Roger wasn't willing to let him stay, he was sent to live with the two school dropouts that were renting a house from Roger, Mihael Keehl and Mail Jeevas, who preferred to be called Mello and Matt for reasons.

Ryuuzaki was broken out of his minor flashback when Matt snapped his fingers in front of his face. He blinked a few times, realizing that he hadn't been paying attention.

"So will you remember not too mess around in police business from now on?"

Ryuuzaki nodded, but he hoped to spark both of his guardians' interest. He took the significantly shortened lollipop stick out of his mouth before speaking.

"Okay, but I believe I managed to solve the case."

They didn't believe him, but who would believe any six year old child if they said that?

"No, you didn't. I know that you're smart, but you're not that smart." Mello retorted, clearly unimpressed.

Matt wondered why Ryuuzaki would say such a thing, when it couldn't possibly be true, when Ryuuzaki smiled, something that was rare for him unless it was one of the fake smiles he put on when he faked being a normal child.

"I really might have Mello. I suspect that it was the victim's sister. Her motive for killing her brother is unclear, but her alibi doesn't quit match up when looked at close enough. I'm sure that if you ask the police to interrogate her more, she would eventually confess."

The two decided to humour their charge.

"Okay, but I don't think that we'll be allowed back at the crime scene." Matt said with an amused smile.

Matt and Mello grabbed Ryuuzaki's hands, even though they knew the boy didn't like it at all. During the walk back to the crime scene, the two teenagers shared silent messages between them. Ryuuzaki was silent, once again eating the lollipop stick. When they arrived, they were immediately chased out of the area, but they managed to tell them Ryuuzaki's suggestion as they were running away, without telling them that it was Ryuuzaki who came up with it.

They were surprised two days later when they heard on the news that the sister had been charged with the murder, and that police had help from an 'anonymous' source. Matt and Mello looked at Ryuuzaki in shock. He shrugged in response and continued eating his cake.

The two friends starred at each other.

"If I didn't know better..."

"It could have been just a lucky guess."

Ryuuzaki was too interested at the news report that was currently on to listen to Matt and Mello's conversation about him.

"Police hang their heads in shame as last night, the notorious phantom thief Phantom Angel made off with another priceless gem."

Ryuuzaki started chewing on his thumbnail. He had been looking into Phantom Angel ever since the thief started becoming well known. The thief intrigued him for many reasons, one being how young they obviously were. Many suspected that Phantom Angel could be a woman, but it was very possible that it was a young teenager or even an older child.

Suddenly, the television was shut off before the report even finished. He looked at Mello and Matt, but not with annoyance like real children would have done if they didn't have a fit. His gaze was mostly blank, but a bit expecting.

"Okay, Ryuuzaki. We've always known that you were very different and much smarter than most your age, but how far does that actually go?" Matt asked, tapping the remote against his left leg. Mello wasn't eating the chocolate bar in his hand, which confirmed that they were serious about the question. Ryuuzaki knew that they wanted a believable answer, preferably the truth, but he couldn't give them the exact truth.

"Intelligence wise, I am more likely than not smarter than the two of you. You don't have to believe me, but it is the truth. And I have secrets that I'd rather you not know, both because they are meant to stay secrets, and because you wouldn't believe them to be true. Now, I'd like too finish watching the news. Could you please turn it back on?" Ryuuzaki stated, sounding almost like an actual child wanting to watch his cartoons at the end. Matt and Mello looked at each other for a few moments, before they decided that it was best to give up for the time being. Matt turned the television back on and rewinded it to the part where it had been before it was turned off.

The two took a seat on the couch on either side of Ryuuzaki, not knowing what to say. And it was best to let the boy keep his secrets.

'But could we possibly have a mini detective under our care?'