2, Yuri is Nano in order to test their own and created a character, Nano as a game of the world's demons, and even can be said to have no heart, she has seen too much sorrow and happiness on earth. Therefore, she created Yuri, who is similar to herself, and this is the test that Nano gave herself.

3, Nano wants to know, when human beings themselves can fight violence with violence, should they still exist? And Yuri's character, whose greatest desire is to get rid of Nano and replace her herself, and she actually does so, Yuri teams up with Junco and the two of them kill Nano together. In reality, Nano stands tall looking down on it all, and yes, Nano is resurrected.