Arthur hadn't cared much when his mother told him that she was nearly sacrificed for the family. He understood that the Roae family had fallen on hard times and were desperate for a solution.
Besides, their blood refinement had clearly worked in the case of Jade. It worked well, so it can't be said that everything that the Roe family did was in vain.
He was very understanding of the Roe family but ultimately didn't care about them or what they did, as he thought that it didn't concern him. But when they came to buy sexual favors from him as if he were some prostitute and then asked him to have sex with his cousin, he realized that the matter might concern him a little bit.
The matter became a lot more troublesome when Jade began stalking him. She didn't do anything outright wrong or break any rules, but her presence still irritates him.
