Concubine Walkthrough - Chapter 25

Ahh yes , I understand the settings of this story is from past history, but a male lead that doesn’t have moral values in non whatsoever is the male in any form of story. How could he killed someone that being used, but did jot proactively hunt down the mastermind? Truly unwise. I’m not asking for really good ML, but being an ML at least don’t make something that are not morally stupid.