After Becoming Cannon Fodder in the Book, I Relied on Sleeping to Conquer the CEO

Wearing a book x wealthy CEO x one-night stand x sweet pet x dressing up as a female partner Time traveled to a minor supporting character whose name I can't even remember clearly. But after all, he was a rich man. I thought I would enjoy a happy life until the end of the story came to an end. But the day after I traveled back in time, the person I spent the night with turned out to be... "Since men and women have had a one-night stand, they naturally have to be responsible for each other, right?" He is the most possessive and paranoid male protagonist in the novel!