Taking Notes.
"So pleased to meet you. I'm Ryuk." The hideous spirit grinned widely, extending a long arm ahead, and holding a dark notebook. "This," he explained, "is a Death Note. My Death Note. And now it can be yours. For a time. Whenever you write a name down on its pages, the person bearing that name will die. No matter what. The way you want them to die. What do you have to say? You are interested. Aren't you?"
Shirou.
After a moment of wide eyed horror, he shook his head firmly. "No," he said. "Are you insane?! I'd never do anything like that!"
Ryuk pulled the notebook back to himself, chuckling affably. "If that's your wish. You won't mind if I stay around for a time, will you?"
Shirou blinked. "Huh?"
"Well, you are obviously a hospitable enough young fellow, I am a spirit and you are no exorcist so you couldn't throw me out even if you wanted to, I won't be a bother, and you wouldn't want me outside offering this Death Note to God knows who else, would you?"
Shirou sighed.
Ryuk fulfilled his promises and never bothered Shirou. For he was patient if nothing else. And finally, when Shirou's skin was already starting to darken, and his hair to bleach down, like Ryuk had predicted, he finally walked to him and asked for the Note.
And Ryuk won.
Ryuunosuke.
He eagerly took the notebook with a wide, feverish grin, and looked at it fervently...
... right before, with a single powerful toss, throwing it into the fire of the bodies he'd been burning.
"Of course not!" he replied, highly offended. "Like hell, man! I'm a craftsman! What's the point on doing it this way, that's super lame...!"
Ryuk winced as he vanished away. But, 'Ryuu and Ryuk' had sounded so promising, and with such a nice ring to it...!
Kiritsugu.
Helplessly, horrified, he watched the whole city burn before him.
The black shapeless mass of Angra Mainyu appeared by his side, and slapped him across the head. "Good job, YOU MORON...! I had wanted to do that myself, damn you...!"
Mysterious Heroine X.
"I have no regrets whatsoever," she peacefully said as she faded out along the rest of Jeannes, Neros, Mordreds and Artorias.
"Actually, you forgot me!" Okita pointed out.
"Damn it!" X said, and tried to reach for the book, but she didn't have arms or hands anymore.
Celenike.
She kicked the cold body off the main seat of the august meeting table, and sat down, crossing her shapely legs on the wooden surface. The woman tossed her hair back and relaxed, sporting the widest smile she ever had sported in her whole life.
"Ahhhh... I always wanted to know, how would this feel...!"
All across Clock Tower, the silence of the dead everywhere was her sole answer.