Same here... I haven't read the other couples' stories yet. I'm just so in love with Nanao and Kuon (≧∀≦) ponpi
I've read the other ones and i'm so looking forward to who gets kuon's older brother and the former student council president's story also had a lot of potential.
I only read the KuonxNanao parts of the series. I love the intensity of their charaters, they were greatly designed by the mangaka.