Are you human too? - Nam Shin III and Kang So Bong - Korean drama Fan made video story

Nam Shin is a son from a family who runs a large company. After an unexpected accident, he falls into a coma. His mother Oh Ro Ra is an authority on brain science and artificial intelligence. She creates an android named Nam Shin III which looks like just like her son Nam Shin. The android pretends to be Nam Shin and he has a bodyguard called Kang So Bong. So they will end up in love.