Grapevine (2003)

Katagiri Naoki and Kyoko are happily married when they find out that they cannot have children of them own. They decide to go with the adoption, but end up being foster parents: they will take care of children who have their own parents yet due to circumstances are unable to live as a whole family. Most of the time children have difficult childhood traumas that follow them throughout their lives. Kyoko and Naoki do everything they can to give lots of love to their foster children and prove that people do not have to be related by blood to be one united loving family.