Sam froze on the spot after hearing what they said.
He already thought about who he is many times. He took shelter in this world Sam's body but he never thought the both of them are same.
This world's Sam is a great tailor, but he is a weak person. not physically but mentally. Since childhood he never fought for anything. He lived just for the sake of living. Just because he is an orphan he just wallowed in self-pity.
But Sam is on the other end of spectrum since childhood. He was also an orphan. But he was abused continuously. After some time, he stopped his pity game. He felt that lack of parents meant lack of restrictions, he can be whatever he wants.
By the time he is fifteen, he killed more than hundred people. He became the beast mercenary and best assassin of the year in the organization.
