I have to say atleast a little about the genius idea known as 'Inner Sakura'. In the earlier chapters of the series you get to see what Sakura is really thinking through a small illustration of her which appeared behind her. You don't get to see much of Inner Sakura in the series anymore, but the parts 'she' was featured in are memorable enough. I just think the idea behind Inner Sakura is brilliant. Everyone has that little inner voice, those things you choose not to say outloud, but keep inside your head. It helps you to relate to Sakura, and you also get more of an understanding of her character with just this small insight into her thoughts.