I traveled through time and came to the Yu Country, a society where women are respected. I am the prince of the old country, and I am at the mercy of the terrible empress. And a book I brought here turned into an ancient magic weapon that can read the emotions of all things? I want to see, what is this cold-faced empress worried about? A hilarious and sweet story that travels through time and space, the male protagonist is extremely thick-skinned and the strongest talker in the world (just a bunch of jokes mixed with a little text) - "What is the Cold-Faced Empress Worried About"
Purpose: Time Travel: Being imprisoned by indifference for the rest of my life, or letting the Empress be obsessed with me