Hikaru Gero

Specialist Type: Poison User Hikaru Gero is part of the Gero Family, one of the top five families of specialists. He is the current heir to the Poison clan. A poison-using hitman from the clan of assassins. In order to keep his sister from being forced into having a child to continue the lineage of the clan, Gero decides to try and get married and have a child of his own.