Clannad After Story is a beautiful story about the continuing and blossoming relationship of two of the main characters from the first season of Clannad, Tomoya and Nagisa.
The plot is a bit more mature and serious, as most of the story does not take place in high school anymore, but instead revolves around first, some of the problems of those still close to Nagisa and Tomoya while still in school, but from there the story shifts into mostly just Nagisa and Tomoya. Yet again, the story takes a more serious turn as it goes on about Tomoya's strained relationship with his father, Nagisa's failing health and her need to stay out of school for long periods of time, Tomoya out and working and living on his own and their relationship together, as it moves beyond boyfriend and girlfriend and goes into them creating their own home and family together.
Clannad After Story touches on many serious matters such as drugs, alcohol, gambling, pregnancy, abortion, death, neglect, depression, parenting and much more, so be prepared to fall in love all over again and have your emotions run wild.
So far I love the story, but it is not over, so it might get changed to a 10 once the ending has completed.