Konyaku Hakisareta node, Suki ni Suru Koto ni Shita.

Chloe, the daughter of the Marquess of Merdikal, is the ornamental fiancée of Kirif, the second prince of the Adanani Kingdom, which has a strong male-dominated society. However, in shock when Kiriff breaks off the engagement, Chloe remembers her memories of her previous life as office worker Misa Tachibana! Chloe, who has decided to leave everything behind and live freely, sets off in search of freedom with Erich, who has quit his position as a knight of the Kingsguard to take advantage of the commotion, as her partner! Source: MU