3 ideas
In Osamu Tezuka's manga Astro Boy (Mighty Atom, serialized 1952–1968), scientist Dr. Tenma builds an android in the exact likeness of his son Tobio, who died in a car accident. He then rejects it because it never grows older, and sells it to Hamegg's robot circus. Professor Ochanomizu later rescues the robot, adopts him, and builds him a robot family so he can live like an ordinary boy.
Astro's creator discards him, while a stranger who owes him nothing chooses to raise him and gives him a family and a normal life. The manga argues that parenthood and identity are built through sustained acts of care and acceptance, not through who made you or what you were made to be.
Robots with human emotions are bought, sold and exploited as entertainment, as in the circus, even though they can suffer and feel loyalty. Astro sits between the human and robot worlds and shows that the line between person and property is drawn by social convention and economic convenience, not by any real lack of inner life.