At first when I looked at K-On! I didn't think I would enjoy it due to the art style that seemed weird and the beginning that was quite boring in my opinion, but as I started to watch more and more episodes I started to get used to the art style and I started to enjoy it a lot!
K-On! isn't one of those story type animes that everyone likes to watch but it's a "touching" story in a way to me since you watch a band being formed and their journeys together until they end up leaving highschool and moving to college while also leaving somewhat of an important person behind.
I cried when they sang Azusa "We touched an angel / Touched by an angel" because I felt that it was really touching