Jinsei wo Yarinaoshita Reijou wa, Yarinaoshi wo Yarinaosu.

Revenge over doting...

One day, the daughter of a marquis, Keira Vi Shandis, is informed by King Regulus that their engagement is off. She is then imprisoned for a crime she did not commit, but with the help of Lugi, the demon of time and shadow, she is able to start her life over again. In her second life, Keira is loved by King Regulus and enjoys a happiness that everyone envies. However, there is something that Keira cannot accept, so she begs Lugi to return to her first life... Give up the happiness that has been given to her and reclaim her pride with the demon!!