Ryuuku the Death:  You have lost , Light . Did n't I say in the beginning , when you die , the _ one _ who 'll write your na me down in a notebook will be me . That is the deal between the Shinigami and the first human to get their hands on the note in the human world . Once you enter prison , I do n't know when you 'll die . It 's annoying to wait . Your life is already over . You 'll die here . Well , it was good while it lasted . We killed so me boredom , did n't we ? We did so me various and interesting things .