Core concept: Inheritance is the dungeon; inheriting means clearing it
In the modern city, there is an "inheritance space" invisible to ordinary people. When something physically impossible occurs during the transfer of a massive inheritance, the entire estate is dragged into an alternate space ruled by "rules."
A distinctive twist
The "supplies" in the inheritance space aren't mere items. They're a medium that can be used to write rules. When an heir uses one, it briefly "rewrites" the rules around them. For example, a bottle of water can temporarily disable the rule "Drinking water is forbidden" for ten seconds, while a pen can cross out a rule on the posted notice, but will trigger a penalty. Supplies are limited, and using them requires calculating the cost, creating the story's core strategic thrill.
