Maybe he feels that Nakyum became submissive not because of him, and MAYBE he wants the old Nakyum back because even though Nakyum follows his orders, he still stands up for himself. Or I don't know that's just my understanding
He knows, it si related to the scholar. See the flashbacks. He noticed the contradiction in the painter's declarations: he said nothing... everything he said is true.
Maybe he feels that Nakyum became submissive not because of him, and MAYBE he wants the old Nakyum back because even though Nakyum follows his orders, he still stands up for himself. Or I don't know that's just my understanding