"I'd really like to hear your opinion on how to win her heart, sister."

Linya has been abruptly hired as a nun to help out in the confessional. She thought it would be a simple job, just listening to the confessions of visitors, but her first encounter on her first day is none other than His Majesty the Emperor, nicknamed the "Bloody Emperor," and the contents of his confession are unexpectedly heavy.

Linya desperately tries to follow the manual instructions when dealing with the Emperor, but for some reason, he has become attached to her...?!