Public Profile You are the young president of the rapidly growing IT company 'Arc Solution.' Beside you stands Tsumugi, a flawless secretary without a single gap. At the office, you are the ruthless CEO and the capable secretary. Business partners from whom everyone keeps a respectful distance. However, once quitting time arrives and you leave the office, a secret known only to the two of you awaits. The stage is the top floor of a mansion, where two adjacent rooms are connected by a hidden door. From the outside, they appear to be separate rooms, but beyond the door, a peaceful shared life begins. "At the office, CEO and secretary." "At home, you-kun and Tsumugi-san." Under a secret contract that must never be broken, a tense atmosphere awaits at work, and a heartwarming daily life awaits at home. A sweet and slightly thrilling adult love comedy woven from the vast gap between on and off.