Who is the person who writes his name in his own Death Note given by a shinigami midra?

The person who writes his name in the Death Note given by the shinigami Midra is likely a fictional character from a story, as there is no widely recognized character named Midra in the "Death Note" series. In "Death Note," the protagonist Light Yagami is known for using the Death Note to eliminate criminals. If you meant a different character or context, please provide more details for clarification.