Rarity in Concordia 

"Soul Bones, huh?" Lothur muttered upon hearing what moved these people.

There were few Soul Bones on the continent, even though this place and demons had existed for countless years.

Soul Bones could be damaged!

As had happened to Lothur before, his bones had been destroyed when he was very close to dying in the Imperial Prison. They only recovered after that because his Physique was special and could regenerate.

When these bones fused with a body, they became part of it, so naturally, they suffered the effects of their owner's bloodline and Physique.

So Lothur, as well as other hybrids, had the ability to regenerate their bones when damaged.

However, this was something that no one else could do but them!

Hence, over the generations, as new bones would emerge from dead demons, others would degrade, and some would come to their end.

As these bones passed from person to person, they tended to weaken and reach the day when they would be destroyed!