This comment shows how little you understand complex characters, and the purpose of a slowburn story.
Nahaesoo is actually gaining a lot of confidence than before, and it's just laughable how you were not able to see that.
That mere fact that she can now stand her ground, ask for help, and no longer afraid to step into a new environment shows how amazing she has been doing, though I know you would probably say that it's a bare minimum, but honey
She's been through A LOT, she had to pay debt that clearly wasn't hers, so much so that she'd hesitate to buy herself her own wants because she firmly believed that paying off her debt would be much better even though she was rotting away
And to top it off she was in a 13 year marriage where she was always verbally abused by her own husband, a manipulative cheating husband who does nothing but compare her to other women and use her like some fleshlight
Nahaesoo doesn't know Taeha because Taeha IS PURPOSEDULLY hiding his true identity, hence why his downfall is bound to come soon, and also why he was afraid, afraid that Nahaesoo would come to know the truth and would never forgive him
This is slowburn, it's not dragging, it's merely feedinf you one Information after another rather than at the same time, that way readers would actually digest and be more appreciative
But then again I would understand
you know what's pissing me off. is that he's doing all this to forget the EX, but he has yet to reassure her of anything. A 100+ chapters and she still lacks confidence and she doesn't even know him hardly. But he knows everything about him. Chapters are moving a millisecond mile per hour. Got this apartment and has moved yet. like WTF is even going on.