Cancer

"Kill you? Dream on! After capturing Viper, I still intend to torture her. We'll see who'll expose King first, you or her. However, I don't know if I can still fulfill this little dream of mine. Why don't you pray for your precious Viper yourself?"

"What did you do to her?" They returned to the same question.

"Tell me first, how did KE run out of money to the extent of making you rob the Leng family? Then, I'll tell you how Viper is doing. This exchange seems very worthwhile, isn't it?"