Kyoukai no Kanata (TV)

[Ryllharu]

Nice troll attempt, except you can't even compare the two series.

One is slice of life with basically zero character development, this was always an action show with elements of a comedy-romance, with plenty of character development. Let's not pretend that the incremental reveal of moe traits among five girls and their teacher is the same thing as actual character development.

Akihito, Mirai, Sakura, and Mitsuki all got a good amount of character development. We learned more about them over these 12 episodes than we did 36 episodes and a movie for the K-ON cast. With ample room for more.

edit:
Mitsuki might have been the most interesting one, since her character arc was subtle and took place mostly in the background. We saw most of her cool and confident façade ripped away at one point or another, in varying degrees and in a different way each time depending on the other character.