The diary complaints of a maid who serves a villainess lady who was unfairly broken off from her engagement due to being falsely accused of bullying the saintess summoned from another world after the saintess got together with the crown prince.

I am a maid serving in the Duke's household. I have been attending to the Duke's daughter for two years, but recently I've been scolded by her often, which has been mentally draining, so I decided to keep a complaint diary... It seems that the Young Lady's bad mood is related to the fact that her fiancé, the Crown Prince, is always together with the Saint who was supposedly summoned from another world.