Yukari has yellow and green long, wavy hair, long eyelashes and blue eyes, with a usually smiling face. Mayura heavily resembles her and like her daughter she is also well-endowed having G cup breasts. 
She is caring, curious and stubborn. Those are shown while she smuggled to the Tsuchimikado Island, investigating her brother's death and took a part in Seigen's daily life. She can be very scary at times - even Seigen stated that she is more dangerous than impurities after she got furious during a family meeting with him regarding Mayura and her abilities.
Yukari was born on the Mainland in an exorcist family where her father, grandfather even great-grandfather work to protect the town. Even though she has a strong spell power, she does not practice exorcism.
She was loved, and occasionally spoiled by her father Zenkichi Otomi and her older brother, Satoshi Otomi. At the age of 23, her brother Satoshi, managed to see her before being executed for being cursed. The executer Seigen Amawaka tried to hypnotize her but failed, and she decided to find out the truth and meet him after that. They fell in love, got married and lived in the island for years, but one day Seigen decided to drive her out of danger by separating with her. Yukari found herself pregnant with Mayura three months after coming back to the mainland.
Later at an unspecified time, she and Seigen got divorced but despite this she still cares very much for him as she and Mayura know that he left to protect them from danger. They remarried and live together again after Seigen's retirement from the Twelve Guardians.
- ↑ Volume 12