Daegongnimui Sinbuneun Jiogui Jeonsa

Alicia Sirius Rayne, a timid, stuttering spinster betrothed to the rumored "Grand Duchess Serial Killer," falls into Hell after opening a mysterious artifact. Now, she must adapt to survive. Years later, she has become a fierce warrior. But as she sets out to conquer all of Hell -- she wakes up in the past. Armed with a second chance at life and a new goal, Alicia must actively pursue the feared Grand Duke Reikart Tessen to secure her destiny. Can this fierce warrior from Hell win the heart of the man who has "killed" six grand duchesses?!

(Source: WEBTOON)