It had been a long time coming, but today was the day it would finally happen. The 5 Property Upgrade Tokens would be used on 5 select buildings to turn them into Rank 7, birthing unique establishments with likely overpowered features that could make Vita Kingdom even more desirable.
The reason they chose the buildings in the inner section was because they were semi-accessible. Rank 7 buildings were best used by both private affiliates and the general public, to generate revenue and provide special bonuses to either party.
Things like the Rank 7 Guild Hall in Cario City were few and far between, where it was a purely private establishment that mostly only drained funds instead of generating them. The same went for the Rank 7 Castle, with only the Rank 7 Shop being different, but it was a purely public facility.