Japan did not upgrade the zero fighters unlike the rest and at the end of WWII, it was just sitting ducks for newer US aircraft. Plus it lacked shield to protect the pilot due to it's light weight design.
True Reality of World is Cruel Brutality, modern civilization is a suicidal hoax. World just only about ELIMINATION & SURVIVAL. There is no such Unlimited Resources from the Universe nor Planet Earth to Supply & Sustain Billions & Billions of ENDLESSLY GREEDY CONSUMERS.
Survivors gets the resources and live on by CARNAGE & ELIMINATION OF LOSERS.
Modern Civilization & Humanity ARE ALL LIES & FALSEHOOD, don't be CHILDISH.