After the talk of the abyss and Leon, Aren spent some time thinking about it, but ultimately, he pushed the thought aside and continued touring the castle along with the butler.
If Leon came back someday, then Aren would put him down for good and never look back at it. It was already his fault for not outright ending Leon back then, and he had come to learn that the people he let live, he always had to kill later on, but by then, the damage that they had caused would have increased.
So he decided that he would stop with the mercy stage, and whoever came against him, he would slaughter. He still held onto the promise that he made to himself when the trial had started, whatever he does, he'll never apologize for it.
He was already too far gone to assume he had any good humanity left.
