Comment by Your Majesty on I’ll Retire After Saving the World - Chapter 4

He came back to the past but as himself from the future not his young self from the past. If his younger self doesn't exist in the past then where did he came from? I think his younger self self exist somewhere but not yet adopted by the future director. I think it's a good idea for MC to raise himself since the plot change already happened in a domino effect.