Konyaku Haki da, Hatsujou Seijo.  

The Inconvenient Life of an Arousing Priestess, 婚約破棄だ、発情聖女。

As the only priestess in charge of fighting monsters, Monica worked tirelessly to fulfill her duties and gain recognition as the crown prince's fiancée. However, her incredible power came with an added complication - the ability to stir up people's baser instincts. When the crown prince discovered this, he cursed her as a wanton priestess and broke off their engagement. The news of Monica's indiscretion spread rapidly throughout the country. Meanwhile, Richard, one of Monica's battle companions, approached her with an offer to come to his kingdom where his brother and wife were in need of a priestess due to infertility. However, there was something that Monica didn't know - Richard was actually the emperor's younger brother! As they fell deeply in love, their story became one of pure, unadulterated romance between an overly devoted imperial prince and a workaholic priestess with a regrettable talent.

Konyaku Haki da, Hatsujou Seijo. has been licensed in English as The Inconvenient Life of an Arousing Priestess by Cross Infinite World.