But it’s progress, seungho while yes didn’t apologize do y’all expect his pride to disappear in one episode? He’s realized if he wants to keep nakyum by his side he’s going to have say/act different granted it’s barely a change. But 20, 30 episodes ago he literally would have hit nakyum for saying no/avoiding.
I don't expect an immediate change in character, that would be too unnatural.
Seungho heard the conversation between Nakyum and his Noona and of course thought carefully about what to do.
Seungho reacted the way he always reacts.
He always thought it was great that Nakyum always stood up to him and protested. That made Nakyum interesting for him too.
The chapter was a quiet chapter, but no actual character development as others call it.
It was an ordinary and ok chapter and I didn't expect anything else.

You call it character development and I don't see any difference. He treats Nakyum as usual to get what he wants. Just because he phrased his words differently and spoke softer and less demanding to Nakyum doesn't make things better. It just shows again how calculating Seungho can be, regardless of his affection and obsession with Nakyum.
Nakyum is of course too kind-hearted again and thanks Seungho for the little thing, the least he has done.
That is the difference in power. Seungho won again.