i have watched this anime for 9 times now and still watching it : ) i liked the relationship between yumi and sachiko became deeper and deeper, at first two series they cant say what they really think with each other but with this anime, everything yumi wants to do with sachiko is taking place in reality, and she became free to express her feelings to sachiko even in letter. whats was good in this world is to express to the one you love that you love them. this is not a typical lesbian story, because there is no lesbian thing in it. the fact thatyou became close to someone and learned to love them doesnt mean that you have sexual feeling towards that person. this anime expresses deep love between friends and even experience hardships, triumph and fulfillment to get through the day being happy with the person that matches the feelings you have for them as they have for you.