@SBJHui It's not a spoiler as it was mentioned in previous chapters. He makes an appearance in early chapters when Leo's dad sent her to west region when he was hunting the nobles who trash talked about Leo. His name was Ibex who now worked as a secretary to Empress' father. And Leo was assigned her room to stay in when she was in west.
I like to post spoilers for the stories I find interesting because I don't have much time to read novel due to busy schedule
you will find me in most romantic historical manhwa comment sections 
you will find me in most romantic historical manhwa comment sections