Little Fly

When the replica of the foundation, the integration pillar, was created, it absorbed all Fragments inside the Soul Gem Dimensional Realm at once. The same thing happened when they got the Fragments from the Leviathans. However, the Fragment inside the Underworld Relic had a part of the system inside, so it wasn't absorbed by the integration pillar straight away. Inside, the system focused on removing it from the Fragment first.

Rean and Roan's group weren't surprised by this. After all, they have known for a long time that the Fragment of the Underworld Relic had that part of the system inside. They just never had the chance to acquire it. The only doubt was what would happen once they did. (Chapter 1999)

Outside, Kafan concluded the deal with the Semi-Celestials of the Devil Races. "Alright, this concludes our little negotiation."