The Obsessive Second Male Lead Has Gone Wild

Rurutia is the daughter of the Brucke family in the Eastern Empire. For years, she has suffered through abuse and experimentation at the hands of her father, who hopes to resurrect her deceased mother. One day, she learns of her dreadful future: to be sold to an old count and die at his hands. Unwilling to suffer this fate, she kisses the man officiating her wedding, but it turns out he is the leader of the holy knights?! (Source: Kakao Entertainment Corp., translated)