Crosszeria Clan

The infamous Crosszeria Clan are known as the 'traitorous' clan or the clan of sinners in Infernus, the world of Duras and demons.

History
As part of their punishment, every Duras that is born into Crosszeria clan has a brand of two crosses vertically immediately after birth and as such, are treated as criminals the moment they are born. The crime committed by Luka and Luze's ancestor was the attempt to sell the names of his Duras brethren over to humans, sealed in a book with chains. As a result, the Duras population demanded in outrage for the whole clan to be punished accordingly, including the offspring and descendants of the Crosszeria's for all of eternity as death was deemed not suitable enough for the clan. This mark is called "Brand Zess" - the carved seal carried by the clan of sinners. According to Luka, 'Brand' refers to the carved seal and 'Zess' means sinner.

Luka, even among his clan members, is the only one who carries a red Brand Zess seal and is therefore known by another name, The Bloody Cross, as mentioned by Cadenza multiple times throughout the series. This is because he was adored by the Demon King, Lucifer, and the red seal was proof of Demon King's twisted form of 'love' for Luka. Lucifer used his blood to seal the contract by dyeing it on the Brand Zess mark on Luka's arm causing him huge amount of pain, even Luka felt like nearly throwing up at the recollection of it.

Luka and his brother, Luze, are the only known members so far.