The Demonic Fiend has not yet formally threatened Originheart City, but to be on the safe side, shortly after the Round Table meeting concluded, Monroe consulted with his staff and ministers and quickly established a relevant institution.
This emerging institution is known as the Sin Hunting Group, and its members are all Demon Hunters, who are those that bear the Demonic Fiends.
The manager of the Demon Hunters, or the current leader of the Sin Hunting Group, is Sir Sabel the captain of the city guards. Since he has to become a Demon Hunter, Sir Sabel must also lead by example and undergo Fusion with a Demonic Fiend.
Originally, Frode's intention was to hand over the Serpent Tail Insect to Sir Sabel for fusion.
However, after Angel's consideration, he rejected this idea.