"You didn't go after Miyu?"
"No."
"So, you're saying all of it was an illusion?"
"Yes. The entire zone is under the influence of the system. The moment we entered the place, you were only seeing what the system wanted you to see, and you were only feeling what you should have felt to influence your actions.
Ultimately, the system wanted you to find the loophole in the setting of the forest, for you to see through the illusion that it had created."
"Huh? Then are you saying the blue rabbits are fake-."
"The rabbits were real. I mean, it's not that the whole place is an illusion. It exists, but it's not how it looks.
The test was for you to be accepted by the guardians and then for you to see through the 'unreal' nature of that forest."
The forest did not want to restrict the students. It never wanted to restrict the students, the academy simply wanted the students to be interested in this place.