I'm the Villainess, So I'm Taming the Final Boss, Vol. 4 (Manga) - Sarasa Nagase
Aileen d'Autriche successfully avoided her bad ending, so now, all that awaits is a good ending with the Demon King Claude...right? Between trying to win the approval of in-laws and dealing with subordinates' shenanigans, will Aileen and Claude finally reach their happily ever after?