Ethan Walker, a top-tier motorcycle racer known as the "Underground Track King" of London, suddenly develops a bizarre condition: every Monday morning, he wakes up with a complete loss of the previous week's memory. After twenty-one years of being single, he decides to get a boyfriend—a "Weekly Boyfriend." Week one: a university professor. Week two: a corporate executive. Week three: an elite solicitor. Week four... This went on for three months until the condition finally vanishes. Suddenly, those separate boyfriends merge into one man. James Sterling leisurely traces the curve of Ethan’s earlobe. "Ran off after having your fun, huh? Care to explain?"