I'm still trying to figure out what is really going on in this series. It's interesting that Kuro called his visions of him and Kuromitsu in the past dreams, and not memories. I guess technically he doesn't have any memories of the past at all, and yet somehow fragments of dreams slip through, and he's not sure whether they're something real that happened, or just nightmares made up out of his mind. And it looks like Kuromitsu is the one who does whatever it is that causes Kuro to transfer bodies. If she wasn't around, would he age normally and die?

From what we've seen, Kuromitsu is less trustworthy than ever. It looks like she's got some plan in the works, and Kuro is merely a piece in her game that she can deceive and manipulate.