Luzette Madal, the only daughter of an earl, has had her sixth engagement called off. The reason for this is that her name is similar to that of the popular young lady "Luzette Dadal"!? Unmarried women are generally not allowed to show their faces and marriage proposals are usually made by letter, so Luzette is constantly being called off by suitors who mistakenly believe the wrong person. All she can do is suggest that the engagement be called off so as not to hurt the suitor's pride and public image when he realizes his mistake. Luzette, who is already used to having engagements broken off, receives a proposal from Lawless Vizant, a famous elite duke. Luzette wants to quickly make Lawless realize that it's another case of mistaken identity and call off the engagement, but Lawless, who is serious about "Luzette", passionately pursues her... (Source: Cmoa, translated)

https://www.cmoa.jp/title/280487/