Geu Daegongui Hwaryeohan Gyeolhoneun Sagi

A former art student finds herself in a novel world as villainess number four, Shaye, who is set to be sold at a slave auction. She is rescued by Archduke Lacius de Schubeiden, who has his own motives for intervening. He offers her money to pretend as his jealous wife in order to deter his stalkers. Shaye agrees to the arrangement, but the success of their fabricated marriage remains uncertain.