One of the Blade Children, she was adopted and raised with the hope that she would not suffer like others like her. However,
once Sayoko's identity as one of the Blade Children emerged, she is mysteriously pushed off the roof of the school (In the
manga, it is Munemiya Kana that is pushed off the roof.). Ayumu becomes the first suspect because he was the only one present
at the roof at the time, despite the fact he is completely innocent. She survives miraculously and later recovers but suffers
from amnesia, though she is happy with her current life and continues to live hopefully. She is said to be different from
the other Blade Children. Unlike the other Blade Children, she does not possess the characteristic slit-pupils

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