VGFacts

At the end of Zero's Prologue, the epilogue tells of Michael dreaming about previous human partner before abruptly ending (Accord ceases recoding). This detail is also seen in Michael's Novella where he dreams of his past companions. One of which was a young man who follows Michael into battle and eventually dies. In the novella, the young man is portrayed as weak-willed and has a habit of repeating himself. Which are traits most associated with his future incarnation, Mikhail.


Source:
https://youtu.be/hqVxuAYAMjg?t=54m33s
http://drakengard.wikia.com/wiki/Michael/Novella