I love how the emperor perked up like a puppy when he saw her arrive. But his hyung was right — he does need a mood manager. Look at him going jealous right after. Also loving the little signs of interest and softening that Ye-rom is showing towards the emperor because of what he said; it feels like they could naturally fall for each other, eventually, rather than a romance being contrived because they're supposed to be in love for the plot.