Reborn as emperor hero during ww2 with an art of war system

A modern military genius, Prince Hero, dies and awakens as a forgotten imperial scion in pre-WW2 Japan, his former identity a haunting memory. Gifted with a 1000x War Strategy System, he can summon ancient war gods and access future military tech, transforming Japan's nascent war machine into an unstoppable force. As the world teeters on the brink of unprecedented global conflict, Prince Hero must navigate treacherous court politics, suppress rising ultranationalist factions threatening internal stability, and prepare a technologically backward nation for a war that will redefine the century. Yet, a shadowy cabal of ancient cultivators, secretly manipulating the geopolitical stage for millennia, threatens to unravel his every strategic move. Can one man, armed with future knowledge and mythical power, rewrite the blood-soaked pages of history, preventing a catastrophe, or is he destined to unleash an even greater, unforeseen one?