The Blood Clan was the first powerful clan to ally with the Demon Race, later replacing the Yaksha Clan to become one of the new three vassals of the Demon Race, and even ventured into the Demon Realm, securing a foothold there.

Logically, such a clan could be considered utterly unforgivable, deserving of the harshest retribution.

They should have been the first to be purged!

Yet, Xu Hei did not get involved.