**** Warning: Slight mature content****
In many holy scriptures of the world, blood has a unique symbol between the relationships of the divine and mortal. It means life, and such a divine-mortal relationship has become the inspiration behind the blood oath.
It is an oath placed around one's heart, a deathly reminder of loyalty.
If someone who swears loyalty betrays their oath, their heart will turn to ashes. So, this oath is not widespread due to the awareness of one's faulty nature.
As time has passed, the oath has spread to the demon continent. One would think that the demons created the blood oath, but the churches are responsible. After all, everyone needs someone to trust, and the blood oath takes away the doubt.
The raven demon stands from his seat to get ready for this complicated spell, using his heart in exchange for wealth.
He stops once he sees Kyrie taking out something rolled inside his jacket.