Ie kara Nigedashitai Watashi ga, Ukkari Akogare no Daimahoutsukai-sama wo Katteshimattara

Giselle, after finding out that she's to be married off to a perverted Duke in place of her younger sister, devises a plan to run away from home. However, in her visit to the slave market to find a male helper, she unwittingly ends up buying the beautiful-yet-arrogant Elvis! Elvis asks for Giselle's cooperation in lifting his curse, slowly bringing curious changes to his body and mind. "Eh? El? Did you suddenly grow a lot taller? And aren't you getting a bit too close...?" The comic adaptation of a popular isekai romance novel! This is a love story that ends with two people becoming each other's "dearest." (Source: Square Enix, translated)