Became a Teacher After Losing His Memory

Regarding the enlightenment of the world, the first sentence I hear is - you are not in this world for the first time. "So, who are you?" A person who has lost his memory smiles like this and wonders, uttering his first question after coming to this world. The normal and stable world on the outside, the fantasy and chaos of the inner world. Would you prefer the stable and dull world outside, or the inner world full of opportunities and chaos? However, before that, the voice said this. You are a special teacher in a school. You need to go to that school and survive as long as possible in this life.