As a society, we speak of second chances but second chances are for those who commit a mistake before it turns into a habit- unknown.
This young master Croft didn't just make a mistake. He repeated it over and over again until it became a habit. Even when his victim killed herself, he didn't stop. He moved on to several other victims. In fact, he was even crueller than before so why should he get a second chance?
After saying that Zi Han had nothing more to say. He got up and said, "A quick death is me being merciful."
The man couldn't even say a word after that. His debauched life was something no one would risk their lives to save. Even his family except his mother would probably celebrate his death and secretly thank the Bloodgarde for getting rid of this problem.