Alluka was imprisoned because of Nanika
Killua only had freedom in order to save little Jealga.
Killua likes Alluka the most among the Hakka family.
Alluka was Killua's only friend during childhood
Alluka is Killua's only sister
The only one in the enemy family who is not a killer is Alluka
But if Nanica is not discovered
If Alluka was a killer
The Aluka in this article is different from the original one, but the appearance and clothing are the same.