Will I Get Second Chance?

Katherine Arlow Van Casta, the youngest daughter of emperor Edward Arlow Van Casta, married the emperor of Forchestier Empire, as his first wife in spite of having a concubine before under the peace treaty between both empires.
Though she did not have golden dreams from this political marriage, she had never thought that she would be treated as a bird inside the cage.
Not allowed to go out and constantly being bullied by the concubine, she had lost the kindness she had, and turned into a fierce villainess who wanted to fight back and ruin what she could not have.
But when someone shows her what true love is! Would she be able to forget the hatred inside her and give her life a second chance?
And what if only then did the blind emperor realize his mistake and ask for a second chance too?
Who will get his second chance and who will lose in the love and the politics that have clutched their life.