一目惚れと言われたのに実は囮だと知った伯爵令嬢の三日間 第01-03巻 [Hitomebore to iwareta noni Jitsu wa Otori dato shitta Hakushaku Reijo no 3days vol 01-03]

Grace, a poor countess, is desired by Ansel, the duke of the moment. "It's love at first sight," and in three days they are to be happily married... but she overhears Ansel saying, "It would be terrible if we were to get married." Apparently, she was a decoy to catch a nasty man who wanted the duke's house. Grace is shocked, but she tries to do her part as a decoy to lure the culprit out to the end, but...? The high-spec duke and the headstrong countess are interwoven in this romantic comedy of super-crossed paths!