The fog gradually rose until even the meager light was swallowed up, and I knew that another night was coming. I am called Nightmare by humans, lying day and night. Nightmare cannot see the sun, it is imprinted in the blood. In our race, only the nightmare that dies at night will have its own reincarnation and be reborn. It may be similar to a delicious bird - the phoenix. If you die during the day, you will not be reborn, but you can sacrifice your own life to save another life. I heard from my tribe that there was a man who hugged the sun for a human being. I thought he was really desperate for his life. At that time, I didn't understand what kind of power could give up immortality for a human being. If I had not longed for light, if I had not met him/her later, my life would have been carefree. But, there is no if.