Romance novel When I told my fiancé that it was his sister that he liked, the prince was so serious that he couldn't escape / Rila Noche Books

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

アリーセ, a countess who works as an official of the royal palace. One day, she happens to see her fiancé, Ru Shea no, hugging her sister. She immediately wants to cancel her engagement, but she is annoyed by the family situation and worried about her. She is found depressed by the Crown Prince, Wim, and when she tells her story honestly, he suggests, "Can you pretend to be my fiancé?" I hear that Wim, who doesn't have a fiancé, is looking for a woman to take to a party in a neighboring country. If I pretend to be engaged to him by the king's order, I might be able to settle the relationship with Ru Shea no peacefully. She was supposed to have received a proposal because of the unity of interest, but she was strongly asked by Wim all the time?