I'm a fan of post-apocalyptic series/movies, and this falls quite well under that category; a future without flowers, resources running out, a desolate landscape with desperate people. I found one of my favourite Japanese songs through this, years ago. It fits very well with the mood of this series. (The one that plays at the end; Amazarashi - Anomie.) This maybe doesn't have the most intricate, nor the most well-thought out plot, but it is quite entertaining and I liked the basic idea of it a lot. It's interesting enough that I wanted to know what'll happen next. I also found it very beautiful, and at times, very touching. The girl acting as Ai exceeded my expectations; I wasn't expecting her to be so good in such a role. The male lead is very cute, but the side character Shion was my favourite. The villain... well, I certainly hated him so good job, actor. Rewatch value? Well, I've seen this 3 times so I'll give that an 8. (Though it took me years to watch it again.) I would recommend this to anyone who likes this kind of genre, and characters that grow emotionally - and can ignore plotholes. It doesn't get boring since there are only 11 episodes that each last about 20 minutes. Maybe just watch the first one and see if this is your cup of tea.