I have to agree that this chapter is disappointing, too. We've skipped so much of Lyon and Dowun's life - including important things that then had to be shown through flashbacks - but now we get filler chapters on Baek Han's backstory. This entire thing could have been easily stated in a couple of panels of thought or dialogue. Nothing in this chapter brings clarity to Baek Han's character and it doesn't foreshadow future conflict.