Madam Was Once a Top Killer

When the top killer traveled through time and fell into the body of a little poor boy with no father and mother, the young master from the first mysterious family thought he fell in love with a poor little boy with no father, no mother and no background. "The number one hacker, top doctor, popular star, university professor, I call you boss no matter what. Madam, what else do you have that I don't know?"