I just had a theory

My dad's been saying that evil will take over for 1000 years soon in the future
I was thinking, mha is set in the future.. so.. what if one day Satan gives everyone quirks..?
Ok I have a reason to make it make more more sense, afo is known as the demon king, right??
And ofa + all might could be considered as God, cuz their known as the symbol of peace..