We all know what happens when a Bount devours the Soul's of Humans or other beings, but what happens when a Bount devours their own kind?

Referred to as 'Diabolerei' among the Bount (more widely known as Diablerie in other circles), it's a more involved process than the consumption of Souls from other beings. When the Soul of a Bount is devoured by another of their kind, they do not go on existing within the 'diabolrist' (the devourer), their power is absorbed but their essence is erased completely-- this marked the act of Diabolerei as a grave taboo among Bount for much of their history, with it being seen not only as cannibalism but as a cruelty that no Bount should inflict on one another.

Bount who engage in Diabolerei do not gain access or 'vampirize' the Dolls of their 'diabolerized' brethren, but they will see their own grow in ways they never would have otherwise. Depending on how powerful the diabolerized Bount was, their devourer could see their own power grow by leaps and bounds as well, compared to the boost they would otherwise see from the Souls of Humans.

The act of Diabolerei is also said to inspire nigh-unexplainable feelings of excitement and euphoria in those who commit it, to an almost intoxicating degree, with some accounts stating it is more alluring than any earthly or supernatural pleasure.

There is a reason Diabolerei was seldom practiced among Bount, however, and it wasn't really because of it being 'taboo' (that played a part sure but there's always more), no, it was because of how deeply it can also change one's own identity.

Bount who engage in Diabolerei have been known to take on aspects or mannerisms that once belonged to their victims (anything and everything from personality quirks, habits, convictions, and morals), and these can often be unwanted changes. A Bount who is sufficiently powerful before engaging in Diabolerei could likely resist or nullify the aforementioned caveats, but the risk is still there, and this is why, despite all the evil Jin has ever committed and will continue to commit, he's unlikely to ever devour the Souls of the Bount who follow him.

Even if it would be very enjoyable in the short term and potentially beneficial in the long term.