Hmm, ... might be just me, but based on how story was laid out, Kakeru seemed more interested in seeing his fantasies (likely fueled by porn) come to life, even if initially Rio-chan was uncomfortable with it. But in the end, she seemed to come around, so it's all good.
An informative description indeed.
"Could we go one more time"? Ah yes, a sentence that would drive any man crazy indeed!
That ending though. It would appear that she is now hooked on wearing those kinds of lingerie now...
(The Crown Vic pulls up. Eddie steps out, matter of factually walks up to Goataku, slaps him with a trout, and returns to the car. The Culture Club's vehicle pulls off.)