Niwaka Reijou wa Outaishi Denka no Yatoware Konyakusha

Also known as: にわか令嬢は王太子殿下の雇われ婚約者, The Earl's Daughter was Suddenly Employed as the Crown Prince's Fiancée, 贫困大小姐是王太子殿下的雇佣未婚妻

by Midori Azuma, Wataru Kazuki

Although she had traveled to the Royal Capital to train as a lady of the court, before she realized it, the daughter of an impoverished Earl was seen as nothing more than another one of the servants. It was during one of her usual morning cleaning rounds when by chance the Crown Prince Isaac, who was rumored for one reason or another to keep all women at arm's length, passed by, but... When she tried to return the document he dropped, she got caught up in a maelstrom of trouble!? And for that matter, what do you mean that all the women who approach the Crown Prince faint and fall over...!? (Source: Ichijinsha, translated)