Konohana Kitan, Shoujo Shuumatsu Ryokou Recommendations
These two anime have pretty deep meanings behind them. Shoujo Shuumatsu Ryokou/Girls Last Tour focuses more on the dark side of humanity, most of the time being the effects of wars to us humans, while Konohana Kitan focus more time in telling us more about the beauty in humanity. Both anime can be pretty cute and emotional at times. The art and animation in both series is also top-notch.
Cute Girls Doing Cute Things anime with some pretty deep meanings and philosophical themes. Both are also slow paced.