Q&A: Do students have to apply to go to NRC? (Twisted Wonderland)

NRC’s acceptance system might be something of a mystery still.
Jamil says he suspects that Kalim’s admittance was orchestrated for the purpose of earning donations to the school from his family, but this has yet to be proven in-game.
The only condition we know for sure is that the mirror selects students “based on the nature of one’s soul.”