Yosano carries herself with grace and dignity. She prides herself on being both a strong woman and a capable doctor, which is why she does not take too kindly to those who belittle her in both respects. She is a feminist who believes that now is the age of equal rights for men and women. She is almost always depicted as calm and composed, but when angered she is quite the force to contend with, often sadistic in her retaliation. She's also prone to prominent sadistic and aggressive tendencies.