Return for Revenge

When she was hit by labor pain, what greeted her wasn't words of comfort but vile accusations of infidelity. Killed in defense of her unborn baby, she vowed to take revenge on them all… and God granted her a second chance. However, it seems that she's not the only one brought back. Who's that silver-haired guy in mask? Why does he seem to know her every move, yet still willingly provide unconditional help regardless? --- When Empress Sawol was pregnant with the Emperor's child, she loses all of her loved ones and then is sentenced to death by the Emperor and her little sister, who became the imperial consort. After her death, she magically gets another chance to relive her life. Will Sawol do the right thing when faced with her past mistakes and save herself and her family? And will she be able to take on revenge against the malicious Emperor and her sister?