Sasayaka na Fukushuu
Married by Mistake!·ささやかな復讐
Elissa and Helen seek revenge after their sister Lucy is betrayed by her fiancé. They convince their stepbrother Jack to pose as Lucy's new fiancé to provoke jealousy in her ex. Though not related by blood, Lucy cannot see Jack as a romantic partner. Her sisters tell her she is fated to be with Jack, referencing the "Mansion of Love" legend. Over time, Lucy begins to view Jack as more than just a brother.