Manhwa like Can the Grand Duke and the Marquis be Friends?

About Can the Grand Duke and the Marquis be Friends?

by Teava, Haku Karong, Yell Yell

Also known as: Daegonggwa Hujak Saie Chinguga Eodi Isseo?, 대공과 후작 사이에 친구가 어디 있어?, 大公和侯爵能成为朋友吗？, 大公和侯爵能成爲朋友嗎？

Obet has no idea what she signed up for when she attends the prince's oath ceremony disguised as her sick twin brother. Before she can make a good impression on the prince, a snooty young lord pokes fun at her, and the two of them spend the day bickering with each other. As it turns out, the lord is none other than...