Honestly, as much as I like sensei's character... I really wanted Kuon to punch sensei at least once, just for Nanao. That was a really cruel thing to do to someone whose self-esteem has always been so low.
Agreed, but I think Kuon realized both that his words would hurt sensei more than a punch and that the consequences of punching him would only make Nanao feel worse. At the very least, punching a sensei on campus in broad daylight would give sensei leverage over Kuon. If it was brought up to the campus disciplinary committee or the police, what happened to Nanao would be dragged into it.
All of the couples were cute and their stories made me feel all happy inside! Even though the stories were short, they somehow still managed to feel well-developed. Also the insecurities and personalities of the characters were pretty realistic, in my opinion.
This was a great read! ( ≧ ᆺ ≦ )
Oh, and it was really refreshing to have different types of uke/seme than the usual, stereotypical yaoi tropes!