Hishoka no Akujo wa, Azato Ouji Odato Shitai

Kaho, who was picky about marrying a handsome, elite man, kept missing opportunities. She tried group dates and dating apps, but no one met her high standards. However, one day she realized that the perfect person was close by. It was Futa Horai, the vice president of Horai Holdings, the company where Kaho works. As the president's son, Futa is spoiled at work and can't do his job without the support of Kaho, the head of the secretarial department, but his original abilities are impeccable. Kaho sets her sights on winning Futa over and devises all sorts of strategies. Eliminating the women who flock to him, setting up drinking parties to be taken home by him... Or so she thought, until he suddenly asks, "Hey? Am I going to be eaten?" Huh? The contrast with his usual sweet demeanor is unbelievable! A strategic office romance between a strong-willed beauty and a cunning man☆

(Source: Kadokawa, translated)