Only Yesterday isn't the most exciting Studio Ghibli film. That's not to say it's bad; it's beautiful, it's realistic, and it's simply a stunning view at what really is, when you come down to it, a normal life. The characters are memorable, the views are exquisite, but at the end of the day, there isn't as much of a message to take from this film besides how different life can be from when you're ten years old, and when you've all grown up. A story of growth, from a spoiled, bratty child, to a grown and intelligent adult, who isn't sure of her direction in life.
Only Yesterday is a treat, even if it might not have the excitement of Spirited Away or the fantasy of Spirited Away, but at it's core it holds a deep, personal energy that may resonate greatly with many in a similar situation to our protagonist - even if it didn't with me.
Though, I'm not quite at that age yet!