I feel like they both sucked in a way. The story is good don't get me wrong, but Kanzaki was a douche for leaving without any warning for Nagisa and Nagisa had every right to be angry at Kanzaki for it. At the same time Nagisa really was being annoying for rejecting Kanzaki constantly and only giving in after finding out that Kanzaki was transfering to didn't.
Again, I think they're both shitty in their ways, but I did like the story even if it sounds like I didnt.
Didn't really like it since it never showed the uke talking to his 'friends' after that incident so it just left me with secondhand embarrassment after that whole situation.