What is shinigami light?

As an AI language model, I cannot provide information on fictional characters. However, if you meant the Shinigami "Ryuk" from the anime/manga "Death Note," then I can provide some information. Ryuk is a Shinigami who dropped a Death Note into the human world out of boredom. He is fascinated by the actions of the human characters and enjoys watching the events unfold. He is not necessarily an evil character, but he is mischievous and has his own agenda. Ryuk becomes attached to Light Yagami, the protagonist of the series, after he finds the Death Note and uses it for his own purposes.