Disclaimer: I do not own KHR.

Cause every author needs a story that is never going to be completed. I name this Experimental fic #1, which, to me, means those stories which are very long and thus will take a long time to complete kind, but I do try to finish my stories even if it's going to take 20 years… unless I totally lost interest. Teehee.

Pardon for the mix of tenses, I just write what comes natural to me.

I. Introduction: First Encounter

"Are you sure we're calling him?" A police officer said to his superior in the office, voice full of reluctance and uncertainty. They all knew him, and while he was a miracle worker and a genius, no one actually liked working with him unless necessary.

The superior glared, which made the police officer gulp a little. "What can we do? It's the Assassin we're talking about. The one and only Arancione! We've been trying to catch him for ages, but to no avail. Not to mention he has attacked one of the important ministers! The next thing we know, he might just assassinate the President! This absolutely cannot go on. Unless you have any better ideas to suggest?" Do I look like I want to call him?

"…Yes sir. I'll contact him."

The superior watched as the police officer rushed out of the room in an attempt to escape his wrath, slightly, just slightly, taking pleasure that he could still scare people out of their wits if he wanted too.

The man shook his head to clear his mind and let out a deep sigh. He could feel a headache coming already. He hadn't slept for god knows how long, just to work on this case and still not finding any leads. He stared at the warning letter given to the victim to look for any clues, only to find none.

Massimiliano Melinno,

Prepare to face your death 7 days later. Do not try to hide, for I will always find you and kill you.

—Arancione

How very scary and threatening. He knew all the words are true as this kind of incidents have happened countless times before, and Arancione would always fulfil his promise without getting caught.

He massaged his head and tried to ignore the throbbing pain in his head. This was becoming extremely difficult.

"Where did he go? I saw him right there!" Police officers were scattered all around, trying to find the assassin who was there just moments ago.

"Shut up herbivores, and actually go and search!" A man growled, glaring at the people who were panicking. He wasn't helping, since he had only made them panic even more.

Said man was scanning the room, trying to locate a place that could allow a person to hide, or a secret passageway, but instead finding none.

This man, was Hibari Kyoya, a well-known detective. In fact, he was said to be the best. However, he had a very bad temper, and kept threatening to bite everyone he saw to death. Especially the useless rookies who were absolutely unable to do anything whatsoever. Nevertheless, that didn't mean that the higher-ups weren't scared of him.

Some people said that Hibari was like Sherlock Holmes reincarnate. Yes, he was that good in solving cases. He even got the antisocial behaviour and attitude. In fact, he was even worse than Sherlock Holmes. At least Sherlock was not violent, nor does he bite people to death. However, he was still needed for investigations, even though people were so scared of him they couldn't possibly do anything.

Yet, for all his genius, the master detective could not find a trace of Arancione. It was as if he disappeared into thin air.

What was special about this Arancione was not because he was an assassin. There were tons of hired assassins in the Mafia world. However, no one has ever seen him before, or known of his identity. The most important thing of all, was that he would always leave a note 7 days before he assassinate anyone. Yet, he could still break through all the defences and preparations and the target would always get killed without fail. It was truly amazing, if we disregard the fact that we were talking about human lives here. Not to mention that he has one hundred percent accuracy.

However, it was known that he only accepted requests that targeted those who committed crimes, although it was a rumour that is unconfirmed. But there's no such thing as an assassin who does good, right?

No one ever caught a glimpse of him. He was like a shadow in the darkness, gone before you could have a good look at him. They didn't even know Arancione's gender, thus it was not impossible that Arancione was actually a girl. Nobody knows.

This time round, Arancione assassinated a leader of a renown company. The target had confessed to the police about all the wrongs he had done, and was willing to go to jail and accept his punishment, instead of getting killed by Arancione. He had some illegal trades, threatened many, and did some other illegal things for the sake of economic benefits throughout his successful career.

The police only tried to help him because they desperately wanted to catch Arancione as he was getting out of hand, and was going to send him to jail after the whole affair was finished. If he didn't die before then, that was.

They had waited to ambush the Assassin, but it was apparently impossible to ambush him. As mentioned before, he was like a shadow. Just now, all everyone saw was black and the target collapsed. Just like that, he was dead. Many things happened at once. Medical attention was immediately given to the victim.

The black shadow disappeared, and nothing was left in the place where he was a few seconds ago.

Hibari looked for wounds on the victim, only finding one at the back of right shoulder blade, which apparently pierced through the heart. A fatal blow, and extremely accurate.

As expected of a master assassin.

Which brings us to the confusion stated right at the beginning. Every police officer was trying to find the mysterious assassin. After searching the whole room and finding no trace of him, Hibari concluded that the assassin has somehow already escaped, even if Hibari didn't know how he did so. He ran out of the house and tried to find out where he could have gone.

As Hibari rushed out the door, he conveniently stopped a random passerby carrying shopping bags and asked, "Sorry, did you see a suspicious-looking person in black? Perhaps with a cloak?"

The passerby looked a bit startled at the sudden question, his round, innocent brown eyes widened a little. Scratching his head that was full of his brown spiky hair, he finally answered, "Eh? A suspicious-looking person in black? I think… I think I saw one man in black running in that direction just now."

The brunette pointed to the direction behind him.

Without even sparing a second glance or thanking the man, Hibari just rushed off to chase the assassin.

He ran in the direction the brunette had kindly pointed out to him but, damn, there were simply too many people on the streets. He wouldn't be able to find Arancione at this rate, with him trying to search for him through this kind of crowd. Furthermore, Arancione was a professional assassin, and he would have many ways to escape and disguise himself from the public's eyes. Hibari gritted his teeth in annoyance. He had never met such a troublesome criminal before, and so skilful at that. How did he disappear like that?

But where, where could he be hiding? Shops? No, there would be no place to run if he was found. If he were on the streets, he would have been found already, since Hibari highly doubted that he was inconspicuous. Unless, of course, he changed out of his assassin attire and blended in like a normal citizen, which meant that it would be near impossible to find him. Too little clues, too little clues…

Hibari suddenly stopped in the middle of his run, facing an alley that was a dead-end. There was no sign of any man who had passed the place and no one could have escaped from here.

At the end of day, Hibari came back to the crime scene empty-handed, and he was not a happy man. Well, he was giving such an intimidating aura that most people just fled for their own safety before he even came close. He could only investigate the crime scene to find anymore possible clues at this moment, and wait for Arancione to strike again.

This marks the start of a game of cat and mouse. Will the cat catch the mouse and bite it to death… who knows.

P.S. Arancione means orange in Italian. I spent a lot of time thinking of that name.

Comments are appreciated.