Movie about a boy who lives with his father because the mother is gone or killed I don't know.I think the father and son move to another house or something and the little boy finds a toy that can communicate with him and the toy helps the boy out with his everyday life. I think in the middle of the movie the dad gets hurt and he's about to die but the toy gives up his life to save him and the boy is heartbroken that his toy is gone but at the end of the movie many other toys came to the boy. It's really sad but happy at the end. This movie is also an Asian movie or something.

CJ7 (2008)
Wikipedia synopsis;
Chow Ti is a poor laborer working on construction sites. He lives in a partially demolished house with his son, y. Chow is eager to save money so he can continue sending his son to private school. However, y is often bullied by other children and his teacher, and he usually finds comfort with a young educator, Ms. Yuen.

One day, while at a department store, y begs his father to buy him a popular robotic toy called CJ1. Chow cannot afford it, and the situation ends badly when Chow spanks the stubborn y in front of other customers. Again, y finds comfort in Ms. Yuen, who is passing by. That night, Chow visits the junkyard where he often picks up home appliances and clothes for y. He finds a strange green orb and takes it home, telling y that it is a new toy. Hesitant at first, y agrees to keep it. The following evening, the orb transforms into a cuddly alien creature that befriends y. After playing, he names the alien "CJ7", and then falls asleep. He dreams that the alien will help him gain popularity and good grades at school. Y takes CJ7 to school, but he receives a zero on his exam and is humiliated during physical education. Frustrated, y tries to dispose of the CJ7, but realizes his mistake and later reconciles with it. The next day, because of his alien pet, y begins to make new friends at school. However, when his father discovers that he lied about his bad exam result, Chow confiscates CJ7. The father and son fall out, so y sticks close to Ms. Yuen, who promises she will look after him. This cheers Chow up somewhat, who fears he might lose his son's love. Y manages to pass another test with aid of Ms. Yuen,and is excited to show his father about this.

Later, while Chow is working on a skyscraper, his foot becomes entangled in a rope. He later dies at a hospital. CJ7 then sacrifices his life to revive Chow. The next morning, y promises his father he will never give up school. At the last day of school, the kids field trip into a park where y sees a UFO land nearby, from which run hundreds of little aliens, led by the resurrected CJ7.

CJ7 - Wikipedia, the free encyclopedia