And there went the life of one who dreamed to rise above the Tower of Babel. Yagami Light, had one day found himself picking up the power to do what people in the cores of their heart desired to do. Kill another man...and have no regrets. The Death Note...changed Light. Slowly at first, but by the end all could see the creature he had become. That creature...was man.
He found himself cornered, at the end of his road, and desperately seeking a means of relief. Ryuk, a more modern Shinigami, did not have the ability to kill with just his eyes, but he clearly saw the potential in Light's heart to be such a Shinigami. To kill at will and not bat an eye. To go beyond the petty life of a man who lived for trivial things, and become something more...like the men who built and fought for the Tower of Babel.
But very like the Shinigami of old, Ryuk would not see a human rise above his place in the worlds. He would let the human play his games...and dabble as he wished, until it was time the Light learned that the road was over...and none could save him.