A new employee is hired in Chihiro’s department. Mukai, a refreshing and well-mannered guy, is the same age as Chihiro. His excellent talents are enough to get a stamp of approval from even HR. While feeling slight hostility towards the talented Mukai, Chihiro avoids competing with him directly, however, one day he notices a hidden passion in Mukai’s gaze. Mukai likes him. Mukai, who was in a completely different league than Chihiro, was being sweet only to Chihiro. Just as he was feeling good about that…? Sweet and painful, a grown-up’s romance.