Oh a new character. Color me surprised. Kate isn't a very elegant nun though with all that blatant expulsion of bodily gases. Though I suppose that may be a turn-on for some guys.
As for the argument between Yozora and Sena at the beginning, if you ask me it's a little unfair for Sena. Comparing the censored all-ages version movie adaptation of a yaoi VN to an adult male-marketed eroge doesn't seem all that reasonable. Poor Yozora falling into that yaoi trap though.
And Sena calling Yozora creepy at the end for talking to herself. Look who's talking missy.