Board Thread:General Discussion/@comment-6986530-20160727023152/@comment-67.66.93.163-20161012171900

Could also be possible that he clung on because he felt he left something unfinished, too. But yeah, that makes the most sense with what I recall seeing about the SCaP scenes.

It also makes sense of how only Anne noticed something off, and even then it's said it was only slightly. It wasn't a personality change this was referring to, but instead the fact he wasn't human now.