Ueno and Kanda are coworkers at a Japanese office who appear to be polar opposites. Ueno works in accounting and is known for his strict, intimidating demeanor, while Kanda is a friendly and charismatic superstar in the sales department, even being next in line for a manager position. Despite their public friction, the two share a close private friendship. Kanda frequently stays over at Ueno's apartment, and their time together has created a deep bond that goes beyond a typical work relationship.

The story is set within their workplace and at Ueno's home, where the contrast between their professional personas and private intimacy drives the conflict. Kanda, whose cheerful facade hides a complicated family life and severe insomnia, finds he can only truly relax and sleep at Ueno's place. For Ueno, this closeness is emotionally fraught because he is openly gay. Years earlier, to protect their friendship, he told Kanda that Kanda was not his type, a statement that has stuck with Kanda ever since.

The narrative follows the tension that arises from their unspoken feelings. Ueno struggles with mixed emotions over Kanda’s casual physical affection and closeness, while Kanda remains hung up on Ueno’s old declaration that he was not his type. The central arc follows both salarymen as they navigate their growing love, the fear of ruining their friendship, and the challenge of being honest about their true feelings. The story is a complete single-volume work that focuses on the subtle, emotional journey of these two men as they attempt to move from a comfortable but guarded friendship into a romantic relationship.