This is a story about personality cloning weapons, and E-0321 is a new type of robot created for war and entertainment needs. Everything is controlled by a program. His central processor has the thinking mode of the person being copied, so he has a human character.
But... Does he really have a 'heart'? Does he really feel happy when he laughs and sad when he cries...?
No, it won't. He is just a robot that imitates humans. No matter how hurt he is, he will never be sad. Even if he sheds tears, he is just imitating...
…But…