Date: Unspecified
Time: Unspecified
Location: Myriad Realms, Dark Realm, Seven Prince of Hell Territory, Pandemonium City
In all honesty, Belphegor had indeed written a will asking to transfer the Demon Merchant Code's transportation rights to the Card World upon his death, only it wasn't to the Librarian, but to his master, Dalton V. Wyatt.
Calamity daughter gems would die, even endure unknown torture, but never betray their master. So, there was never a problem with Belphegor willingly giving the rights to the Card World to the Bloodrool Hegemony.
But if he were to be killed, considering the debt the Seven Princes of Hell's dark faction was carrying, the rights to the Card World it possessed would be liquidated along with its other assets by the Demon Merchant Code. Then, a bidding war would break out between the interested parties. To avoid that and not cause his master trouble in the event of his death, Belphegor wrote the will as instructed.
