Midori Watanabe is a 23-year-old, 158 cm tall junior colleague to protagonist Ryo Fujihashi in their office workplace. She possesses distinctive pink hair and green eyes.

Exhibiting a youthful spirit, Midori demonstrates a tendency to skillfully fawn over others. She maintains a strong interest in romantic narratives, consistently identifying love stories as her preferred genre of discussion, and frequently steers conversations toward relationship-related topics.

The character appears throughout both seasons of the anime adaptation, retaining her established role within the office environment and social circle without documented alterations to her background, personal history, or professional circumstances.