(Kari) Hanayome no Yangotonaki Jijou / (Temp) Bride's Noble Circumstances (JNC Heart)

[gmkz]

Name: (Temp) Bride's Noble Circumstances /（仮）花嫁のやんごとなき事情
Author: Yusagi Kanou
Artist: Yamashita Nanao
Publisher: Kadokawa (B's-Log Bunko)
Volumes: 13 (Complete)
Genre: Shoujo, Romcom, Fantasy

Synopsis:
Ferdia is a workaholic orphan living in a church orphanage, helping take care of the younger children. One day, the King asks her to take a job substituting for his sickly younger sister. No problem—it’s not her first time doing it, and the pay's gonna be great. But THIS time, her job is to wed a prince from an enemy country… And make him divorce her ASAP!

[EmpactWB]

This sounds pretty cool. Count me in.