Nine years ago, the zoldyck mafia was eliminated. All of its rivals secretly formed an alliance to rid of the second most powerful mafia family. They hired spies to infiltrate and sabotage the family's security. Then attacked late in the night, implanting explosives into the mansion, before sending in their troops.
Fortunately, four of the Zoldyck's children managed to escape. Illumi, the oldest son, leads his three younger sibling, Killua, Alluka, and Kalluto, out of harms way. However, his parents and the second oldest Zoldyck do not survive.
All the surviving Zoldyck's manage to escape into the slums of the city. They had nothing left, the money in their trust fund was plundered. With nothing left to their names, they are forced to fend for themselves on the street. No business will hire a young omega, especially one with three children to look after. Soon the eldest Zoldyck is forced to take up a promiscuous job as a prostitute and stripper at the popular Cat's Alley. He has to swallow his pride and endure what he is given. Anything to keep his siblings alive and safe. A admirable person, one who has suffered to much. Chrollo can't help his urge to save this passionless Doll.l./p