Ame no Hi no Iris

Also known as: 雨の日のアイリス, Iris on Rainy Days, หัวใจจักรกลในวันฝนพรํา

by Takeshi Matsuyama

The story is centered around a cute android who initially had a happy life with her master who dearly loved her. But she was then struck by a series of misfortunes and ended up in a robot-equivalent of concentration camp. Through experiencing and witnessing the sufferings towards herself as well as the people/robots around her, she eventually gained a better appreciation of life.