A cute ending, though I hate that the conclusion felt like the generic rushed last two chapters conclusion for the main couple. They deserved more time and development before this point, to be honest. The series went from cute fun, to a complicated mess focusing on side characters for most of the chapters, to finally a serious conclusion that feels almost disconnected from the rest of the series.
What bothers me more is a problem I've seen here and in many other series. On page 16, Kanna indicates that the difference between friends and lovers is a more physical relationship... when that is most definitely not true. People get in physical relationships without love all the time, so claiming romantic love equates to kissing and more is so frustrating and inaccurate.