Tsujii Nagisa

The protagonist's boss, she is a stern, self-deprecating woman. She is serious, strict, and difficult to get to know and has a tendency to nag a little. As a result, although she is trusted by her colleagues at work, she does not interact with them in her private life.

She and her husband became friends through their work relationship and got married after dating for a while. However, after six years of marriage, they are still unable to have children and the relationship has become awkward.