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Killua's little sister, Alluka's twin sister, was proclaimed useless by the family as she was not strong enough to be an assassin. She didn't have any techniques or powers like the rest of her siblings.
Her parents deemed her a nuisance..
Her siblings weren't allowed to go near her..
.
.
She was locked up underground for Illumi to experiment on...
Until after 5 years of the experiments, Seiko finally saw the light, well, it was more like hell.

After the deal, she finally had enough courage to rebel against the family and leave which made her stumble upon the Hunter exam. After she meets the main four and reunited with her brother, what will happen during the exam?

*i don't own Hunter x Hunter all rights to go the actual creator!!!*