L Lawliet may not have been the most observant person in the world, but he was the best detective, and so he definitely noticed a notebook falling out of thin air. Cocking his head to the side curiously, he made his way outside the apartment to check it out. "Death Note," he read the cover aloud, "Seems strange..."
He flipped the book open, reading the first page, which held the supposed-rules for the Death Note:

*The human whose name is written in this note shall die.
*This note will not take effect unless the writer has the person's face in their mind when writing his/her name. Therefore, people sharing the same name will not be affected.
*If the cause of death is written within the next 40 seconds of writing the person's name, it will happen.
*If the cause of death is not specified, the person will simply die of a heart attack.
*After writing the cause of death, details of the death should be written in the next 6 minutes and 40 seconds.

L gave a shake of his head as he muttered, "The human whose name is written in this note shall die... That's absolutely ridiculous." Walking back into the apartment, he took a seat at his computer. "There just no way..."
His onyx eyes went to the open booklet with all his business contacts. It's just a prank, so it couldn't hurt to double-check. Flipping to the first blank page in the notebook, he selected the most useless of contacts, and then wrote that person's name down. There was a twenty second pause before he took his cellphone out and dialed the number...
"Hello," the detective greeted calmly.
"Hello, Ryuza-" Gasping and other panicked sounds began on the other end of the line. After a moment, the call was wordlessly terminated by somebody who'd entered the room...
"The human whose name is written in this note shall die," L repeated to himself quietly, disbelief and shock washing over him. "It...works," he choked out the words, and then picked up the sweetened coffee that sat on his table; sipping at it, he washed the bitter taste out of his mouth. Does this make me a murderer? Or just somebody who misunderstood the situation?