Hachiko: A Dog's Story :'(

This is movie is very, very sad =(...
It is about: Parker Wilson was a teacher of university. One day, when he down of a train, he saw a dog. He thought that the dog was lost and he took it to his house, believing that the following day he was going to find to the owner of the dog. But he didn't find the owner, and the dog stayed with him. He had a necklace with a symbol; it was representing to the number "eight" in Japanese, that is say "Hachi". For this, Parker called the dog Hachiko (nicknamed Hachi).
As the years went by, an incredible friendship grows between them. For a custom that he adopts, Hachi is going every day to wait for Parker of the station of the train to receive him when he returns of his work. until one day his owner dies in an unexpected way.
Nonetheless, Hachi continued appearing every day at the same hour; he was waiting that his owner returning with him.
For ten years Hachi lived near of the station until he died.
_In synthesis, this movie shows the friendship and the loyalty that can give us a pet.