Rumina's fate had been predetermined by her aristocratic family, leaving her with no autonomy over her social circle, appearance, or relationships. In a bold act of rebellion, she seeks refuge in a fast food joint, but inadvertently forgets her wallet. A charming young man offers to pay for her meal in exchange for a date, but ultimately deceives her by stealing her first kiss, leaving Rumina mortified and humiliated. Despite her disgust, fate cruelly reemerges when this deceptive boy becomes her newly appointed bodyguard.
The first volume offers bonus content concerning Club Papillion and B-Men Kazoku's "Merumo-tan Passes Through." The second installment includes "Merumo-tan Comes Again," another B-Men Kazoku supplement. Finally, in the third and final volume, Princess Paffy must urgently marry a wealthy suitor within a week to save her imperiled kingdom. However, Paffy chooses to enlist Klaster, her loyal friend and servant, to seek out a group of culprits responsible for the nation's economic meltdown and recover their stolen riches rather than comply with the kingdom's arranged marriage tradition.