Arishima Yukimi

She is the second wife of the protagonist's father. She is the daughter of an influential man. She had an affair with the protagonist's father while she was still in school and married him upon graduation.

She lived in a small town in the countryside but moved to the city not too far away to distance herself from the harsh treatment of others due to her scandal.

She is being targeted by various creditors for a debt she amassed. She was rescued by the protagonist only to lead her to another downfall.

She is a nurse by profession.