Sayo Kaji

**Sayo Kaji** (加治 (かじ) 沙世 (さよ) , *Kaji Sayo*?)

### **Description**

Sayo Kaji, the daughter of Osana and Hayate Kaji, was a highly skilled Pro Hero known as Sandstorm. She possessed an insatiable craving for powerful quirks, which ultimately led to her own downfall.

Initially, Sayo married Dr. Nemu Sasaki, but their union proved to be short-lived. Following their divorce, Sayo gained full custody of their children, Benjiro and Yumeki.

Undeterred by the failed marriage, Sayo remained fixated on her quest for powerful quirks. Her ambition drove her to groom and manipulate Namihei Uchiumi, who was 15 years her junior and a mere 18 years old at the time. Under the guise of "honor," Sayo coerced Namihei into marriage. Together, they had three children: Azusa, Umi, and Karen. Fortunately, Sayo's abusive behavior towards Namihei eventually led to their divorce.

When Benjiro reached the age to attend middle school, Sayo prevented them from doing so, opting instead to train them herself. In this environment, Benjiro was pushed to their physical and mental limits every single day, enduring grueling training and unrelenting discipline.
This excessive and brutal training took its toll on Benjiro, leading to frequent nightmares amplified by their quirk. They also suffered numerous injuries as a result. In an unconventional move, Sayo collaborated with the Hero Public Safety Commission to secure a hero license for Benjiro despite their young age.

However, a turning point occurred when Benjiro stumbled upon the news of their father's adoption of a boy named Takeshi. This revelation shook them to the core, as they had all but forgotten about their father due to their mother's manipulations. Witnessing their father's willingness to embrace Takeshi as part of their family sparked a flicker of hope within Benjiro. It gave them a glimmer of belief that their father might rescue them and Yumeki from their mother's clutches.

Deeply concerned for the well-being of his children, Nemu Sasaki confronted Sayo about her harsh training methods. He threatened to expose the Hero Public Safety Commission's decision to allow Benjiro to become a hero and shed light on Sayo's questionable actions, unless the commission intervened and removed Benjiro and Yumeki from her custody. Nemu also expressed his desire to support Sayo's partner, Namihei, and his other children, Azusa, Umi, and Karen Uchiumi. Despite Nemu's pleas, the Hero Public Safety Commission turned a blind eye to their distressing situation, leaving Benjiro's half-siblings trapped in their tumultuous environment.

Nevertheless, Nemu achieved a partial victory by obtaining full custody of Benjiro and Yumeki, ensuring their safety and protection from Sayo's abusive practices.

Subsequently, Sayo mandated homeschooling for Azusa, Umi, and Karen, with plans to enroll them in prestigious hero schools like U.A. High School or Shiketsu High School once they reached the appropriate age. However, Sayo's abusive behavior continued towards her husband Namihei. With the legal support provided by Nemu, Namihei successfully managed to have Sayo arrested for her mistreatment of him and Benjiro.

Consequently, Sayo was incarcerated, and her hero license was revoked. When she sought help from her family, she was met with disappointment and rejection, as they held no sympathy for her actions and the consequences she faced.

Namihei, now in a relationship with Nemu, and all the children found refuge in the U.A. dorms. Nemu began working as the on-site doctor at U.A., while Namihei embarked on a new career as an art teacher at the prestigious institution.

Meanwhile, Sayo harbored a deep-seated resentment toward Nemu and harbored a burning desire for revenge, blaming him for taking everything away from her. The flames of her vindictiveness burned brightly within her, fueling her thoughts and actions.

### Hero

Hero Name: Sandstorm

Hero Kanji: 砂嵐

Hero Hiragana: すなあらし

Quirk name: Sandstorm

### Relationships

**Family**:

Child - Benjiro Sasaki

Daughter - Yumeki Sasaki

Son - Azusa Uchiumi

Daughter - Umi Uchiumi

Daughter - Karen Uchiumi

Brother - Sota Kaji

Sister in law - Ama Kaji

Nephew - Soma Kaji

Nephew - Waku Kaji

Sister - Kazane Yoarashi

Brother in law - Fujin Yoarashi

Nephew - Inasa Yoarashi

Mother - Osana Kaji

Father - Hayate Kaji

Cousin - Sajin Higawara

Sister - Koa Jooryoku

Brother in law - Isan Jooryoku

Niece - Yoa Jooryoku

Niece - Yoin Jooryoku

**Romantic Interests**:

Ex-husband - Nemu Sasaki

Ex-Husband - Namihei Uchiumi

**Allies**: Keigo Takami

**Rivals**:

**Enemies**: