Board Thread:Graveyard/@comment-24128199-20131103230940/@comment-6697950-20131104055942

We don't judge souls or images to be either alive or dead. Whether a person is alive or not is judged solely on whether their body is alive or not, as that's the least ambiguous way to define "alive". Akihiko's body is definitely dead, so we deem him as "dead", even though a copy of his consciousness exists. Emphasis on "copy". Yui was an AI from the start, thus she didn't have a body to begin with.