I feel sorry for Reira, although she appears to be just a spoiled selfish woman, she seems to be really suffering from loneliness. That overall loneliness should be the one that made her buy Shin back then in the first place.
I feel sorry for Takumi who seems to be comforting Reira though he tried his best to avoid it. However, I'd hate to think that he really loves Reira and is comforting Hachi who is pregnant with Takumi's child which Takumi for sure wanna have now.
Shin is cool >_<