The Second Sage of Konoha

In the Land of Rain during World War II, the protagonist gained ice escape after falling into a ruins. It's not a genius, it's not a bloodline, it's all about figuring out the laws of chakra – wind plus water equals ice, what does ice plus earth plus fire equal? He tries it himself. : The story of an "extraordinarily ordinary" person slowly becoming stronger in the world of Naruto.