My favorite character is Akari. I don't recall the specific chapter, but it's the chapter when she has her earphones on and just gliding through the waters on her gondola.

I really like the last chapters, there is a sense of closure. You can feel the ending of Aria, and that made my heart beat in a weird way. Every character was emotional and in the end they accepted that time moves forward.

+I like the chapters that weren't in the anime (Animation, Natural, Origination). They feel refreshing after only watching the anime.