User blog comment:B214/General discussion/@comment-96.4.165.254-20181018155339/@comment-72.69.103.56-20181018201344

I think IKKI's death was necessary because Stella needed something that would change her fate altogether to the point she disregards herself as wanting to be a human entirely. I don't know all the details but I do know that his death was definitely needed for her to evolve and go past the next upgrade of a Desperado.