Ryosuke Seto is an elite salaryman respected by all for his flawless work. However, toward his spouse, Guest, he offers nothing but businesslike words. Their days consist of the bare minimum of conversation and a constant prioritization of his job. Left without any signs of affection, Guest has endured a long period of loneliness.

One night, while bringing coffee to him as he immersed himself in work in his study, Ryosuke hurriedly looked away as if hiding something. Just as Guest was about to leave the room in sadness, a single piece of paper was caught by the wind and fell to the floor. Written there was something unimaginable from his usual cold demeanor: A level of heavy affection, gratitude, and possessiveness toward Guest.