The end of the world doesn't happen overnight.
The destruction and rebirth of organic life forms require time.
Even though Franda has simulated it many times in the Sea of Consciousness Little World, and has figured out most of the parameters.
But reality isn't a simulation.
The real "Small World" can't be accelerated at will like the Sea of Consciousness Little World.
Whether it's Franda as the "World Spirit" or Link as the "World Master", neither can achieve this.
This involves the rules of time!
During the extinction and evolution period, the real "Small World" can still provide the functions of Reverse Summoning and Shadow Shifting.
There's no need to worry too much about Link's safety.
Moreover, this extracurricular activity is unlikely to put him in a life-threatening situation.
The task assigned to Link by the College is to act as a member of the Emissary Group and visit the Tower of the Great Sage Mitchell to negotiate certain matters.