When he confronted Hans, Bloody Rose was nearby, so she must have known that he had been shot in the right arm, but now, he had no injuries in the right arm. How do you explain that?
If Blood Rose suspects him, and then undertakes a secret investigation, comparing his recent behavior with that of the past, he will surely be able to guess what he has gained to change his destiny.
The ring system is his greatest secret. Even the uncle's family, and to Feifei, he will not tell them how it is possible to let a killer know.
When I think of this, I intend to condensate in...