Charlotte could almost guess the reason—it must be because the specifics of the ritual were classified as taboo by the Blood Servant Mark, forbidden to be disclosed, even in a diary. Bertrand probably triggered a reaction from the Soul Mark when he wrote this part.
Seeing this, Charlotte gently shook her head:
"He calls himself the Chief Priest, but he's really just cannon fodder..."
Yes, cannon fodder.
After all, the Blood Demon Sect is a transcendent organization of the Bloodline. How could true high-ranking members be mere Blood Servants? Bertrand was likely just a tool executing commands for the Dark Apostle.
The power of an Earl-level Bloodline isn't so easily obtained. Easy come, easy go. Taboo Blood Servants are inherently slaves to higher-tier Bloodlines, and once the Blood Demon Sect accomplishes its goal, he'll probably be discarded.
However, aside from the sacrificial rituals, Bertrand did record some of his observations within the Blood Demon Sect.
