Rieko gave birth to her child, Yuuki, when she was a university student. The father wanted her to have an abortion, but Rieko chose the path of a single mother. Despite being a single-parent household, she worked hard not to be pitied, and Yuuki responded to this by not being spoiled. However, the loneliness accumulated in the mother who worked until late at night and had almost no rest. Even when they decided to go on a hot spring trip for paid leave, Rieko was only concerned about work...
