Regarding the Duke with Gynophobia and the Eccentric Lady Scholar

Elsa, who taught historiography at the university, was Duke Lombardini's 28 year old daughter. She had missed her chance to get married but she was pursuing what she liked and living enjoyably. However, there was a weird, charming intruder. He was her friend, Duke Inglacia, Luca also 28, proposed that they pretend to be sweethearts. Although Elsa undertook the role of sweethearts because he promised to aid with her research funds, Luca was more useless than she'd thought……