Mao Hamasaki, an intelligent female boss who works as a female manager at a certain company, was sighing today when she saw a middle-aged employee who was the oldest in the department and was a so-called “windowside tribe.” The company also recommended him to retire under the name of an early retirement system, but he just repeated a dull reply like a noren. One day, a middle-aged employee by the window was absent without notice, so his boss, Mao, decided to go to his apartment to see what was going on …!