The Tyrant Husband Has ChangedThe Tyrant Husband Has Changed; this is the name of the manga.
From Baka-Updates:
On death’s doorstep after being stabbed by an assassin, the one thing Idris is sure of is that she doesn’t want to die. Her fate seems sealed until her husband Khalid, the terrifying archduke of Caltes, makes a cryptic promise to save her life. That’s when Idris wakes up a year earlier, on the day of her wedding, with a chance to redo it all. But while she’s grateful to be alive, her memories aren’t adding up. The Khalid she remembers was a ruthless tyrant, but the man before her now is affectionate and kind. Was their loveless marriage just a horrible dream or has Idris’s past become twisted in reality? She has no choice but to trust Khalid’s heart if she wants to survive and find out who tried to kill her.
