Shuudengo, Capsule Hotel de, Joushi ni Binetsu Tsutawaru Yoru.

Minori Aizawa is a young clothing designer working under Akihiko Hadano, a boss with whom she trades almost as much teasing as professional respect. One night out with coworkers ends with both of them missing the last train and sharing the cramped privacy of a capsule hotel. The unexpected closeness exposes an attraction they had been ignoring, and returning to the office does not make it disappear. Between deadlines, workplace boundaries, and stolen moments alone, Minori and Hadano must decide whether that night was an accident or the beginning of something they can no longer pretend is not there.