Deruko Honne is Dell Honne's twin sister.
Deruko is a female, but acts like a boy. She teases Dell by calling him names and fighting over the computer with him. Deruko is a very aggressive girl that always yells at people and very has arrogant look on her face, but she does have some feelings for Dell despite the fact that he is her brother.
Here is an example of her voice:
She may be mistaken to be Yowane Haku, but they are not related whatsoever.
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