There are three episodes that poke my tears: one is that his mother left him in the woods, and he begged if he would like him if he turned back into a little boy. One is that in the end he switched back to the day he had his mother, and a day later his mother died and he slept next to his mother's pillow. One is that he asked his mother if you would die, and said how many years you would live, and he didn't want his mother to die.
I think the whole film is very touching, although he is a robot, but he has the same feelings as a human being.
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