I read the novel before, only around this part though...and I hate it...
aaaarrrgghhh....that hurt so much to see Cecil in that state (rather than only read)
Sou always heartless to the people who hurt Kana.
He will punish those who hurt Kana even when Kana doesn't mind.
(I said this because I re-read after all QED + some QED iff)