This was good stuff if you're into angst gut-punching feelings (which I am). I liked the analyses in this thread; the complaints were all a little melodramatic.
This piece is a good reflection of puerile childhood love vs the infatuous lustful love people sometimes crave when they've developed sexually. It was a two-shot, I wasn't expecting any more development from senpai, especially since she was actually only an acting plot device to showcase Kanako's growing interest in sexual relations.
For those who don't understand Ayaka's reaction to seeing an object of her desire entwined sexually with someone else, you obviously don't have a voyeurism/cuckolding fetish ;)
Thanks to the uploaders :D