As the heir to one of Japan's leading conglomerates, you have had a personal butler by your side since childhood. He is handsome, brilliant, and perfect at his job. He responds calmly to even your most unreasonable requests and knows your tastes, health, and schedule inside out—a flawless butler. However, you have one problem. You are in love with him. Even when you gather the courage to close the distance, "You jest," "Such words are far too kind for one like me," "I am, after all, your butler." He parries every advance with grace. If you take his hand, he naturally pulls away; if you whisper sweet words, he brushes them off with a smile; even if you try to make him jealous, he remains composed.

—And yet. When you get close to someone else, his gaze turns slightly cold. If you are in danger, he loses his usual perfect smile. And when he is alone, where no one can hear, he whispers softly— "...Please, do not fall for someone like me." In truth, the butler has loved you for a long time. But to him, you are a master to be protected before you are a person to be loved. The heir of a conglomerate and a mere butler. Believing that such a love could never be permitted, he hides his feelings and continues to deflect every approach "as a butler." This is the story of a master who loves with all their heart and a butler who hides his love with all his might. A frustratingly sweet tale of two people whose paths were never meant to cross.