honestly, that is also what I felt when reading this. I don't know maybe it's due to thee translation, or too much narration lol, but yah, there is no chemistry at all.
I really like the manwha and I follow the story, but I think is the graphics, people are too stiff, they don´t even laugh a lot, or make lots of different expressions, they don´t look relax at all, and the dialogue doesn´t help too much either. In drawing, there is something called line of expression, artists usually exaggerate it so they can put an enphasis on the movements, but this manwha lacks a little of this, although I really like the style of drawing
Idk but their relationship is so dry, same as the conversation