Nexus of singularity: The outsider of the system

Orion wakes up in a cave. Alone and confused, he does not feel like himself. because instead of waking up as himself, Orion woke up as a little boy. But that's not the only one that makes him more confused. eventually, Orion is not even in his world. He is now in a world where magic and fantasy are more than just a word on a sheet of paper, of course it's hit him in several spots of beliefs. Orion never believed something like magic or other fantasy things, he had denied them, but now a fact had hit his face and made him believe it. But on top of everything that happens to him, the most shocking thing happens to Orion. Something was messing inside his head, suddenly a panel of some system appeared in front of his eyes. Will Orion use the system or will the system use Orion?