On the brink of being fired, 30-year-old Haruka Nagashima receives a secret mission from the founding family to prove that "Man'yo Ichijo, the daughter of the president, is not blood-related to the current president, Kazuma Ichijo." Having successfully started living together with Man'yo, Nagashima finds himself facing the onslaught from the founding family member, Kouyou Ichijo. Kouyou wants to keep Man'yo, who resembles her deceased sister, close to her. If Kouyou's objective is achieved, Nagashima should be freed from Man'yo, regardless of the secret mission... "I can't wait to see what happens next" "Aunt, you are actually ○○○○" and so on, this is the second volume of the ambitious work by a talented author that received a hot response in the "Comic DAYS" series.