"Rin, about Riley's past…" she began
"When Riley was a child, the capital bought her and her sister.
She and other children in similar circumstances were forced into a program for assassins and were trained to kill.
She survived that cruel experience. And she emerged as an assassin that could fully carry out the capital's orders.
However as Riley began to fulfil the capital's missions, she began to sense the capital's darkness.
And her target at that time, our boss, ended up persuading her to defect and join the revolutionary Army, which truly fought for its citizens.
But by that time, most of her comrades and those who had grown up with her were all dead. I am sure you understand?"
The explanation blew his mind. He was wowed by her story. He had expected her past to be somewhat bad but not so bad as this.
He stared at Lena for a while before he realized himself and remembered her warning.