If you liked the A Kiss For My Prince manga, the Anime-Planet community thinks you'd like:
The monarchy was abolished long ago in Korea – but what if it still existed to this day? Chae-Kyung lives in such a world where Korea’s palaces are filled with royalty and the crown prince Shin has transferred into her school. Her initial run-in with the boy is unpleasant to say the least; but what’s worse, Chae-Kyung soon discovers that she and Shin are forced to be married due to a promise their grandparents made! How can a simple commoner learn to live the life of a princess when she can’t stand her newly beloved husband?
Both mangas are about love triangles and the royal family. There are similar themes about class and status and both feature elaborate costumes.
They're both Manhwa that deal with royalty, romance, and an average girl who has a connection to the royal family. They both have an evil queen as a antagonist, as well as princes who fight over succession while in love with the lead. If you liked one, you will definitely like the other.
He’s the ruler of the country of Roinne; she’s a typical Korean teen, and his 100% perfect girl. For the rich and powerful Jarte, he wants nothing more than to take this girl, Jay, for his own, and together the two begin a tentative, tender relationship. However, Jay and Jarte’s lives will be nothing but simple, as insecurities, assassins and rivals in love stand in the way! Will the two manage to stay happy together?
Both of these stories are manhwa that are royalty focused romances. In both, the main female character first meets the lead male character and does not realize his power/status. 100% Perfect Girl has much darker tones, but they both have murder/lost memories as sub-themes.
Both of these stories start out with the main female character making a deal with the main male character that causes them to leave behind their poverty/common-ness and enter a world of nobility/royalty. Eventually this leads to romances and love triangles that get pretty intense. They have a similar feel, in both story and art, so if you like one, you may enjoy the other.