Demon Without Eyes

There was a time when a mortal woman fell in love with a shinigami; a God of death. The woman gave birth to two twins, a human boy and a shinigami. They decided it best to end the young shinigami's life to save the little boy and the older shinigami sacrificed his own life. But the younger one's soul attached itself to his mortal brother. The mortal's name was Light Yagami.