Mother

The mother of Yuuma and Sakura. She had psychological trauma and could not bear the voice of her daughter, who made her panic (that's why Sakura no longer uses her voice).

The fugue of her children deeply traumatized her and she realized that she was not well (mentally), so she was followed by a psychologist for treatment.

She does not in the least hate her children and she is waiting to hear from them impatiently.