After Completing his training in the white room. Professor Ayanokoji allowed kiyotaka to have his freedom until he is ready to succeed him. So he Will Allow him to go to AHNS as long as he doesn't hold back.
Ayanokōji is the legend; Yagami is the update. Different code, same cage. He'll crack the operating system-point by point, favor by favor-until the White Room's owner is the one standing on the drop floor. If he fails, children pay. If he succeeds, no one will ever call obedience "education" again.