It seemed to me that the uke came across more shocked than disgusted/reluctant during the sex scene. It didn't really feel like rape to me, but rather surprise sex. He even said "it couldn't be helped".
I thought this would just follow the first two, but i guess it's just gonna show every girls fucked up life until the end...is there gonna be murder at some point, because so far at least two of them have a good reason for it.
Bittersweet to the end is my prediction