Why doesn't Minato use Sage mode against the "Masked Man"? We all know that Minato was able to use sage mode, but when the nine-tails attacked the hidden leaf, why didn't Minato go into sage mode and destroy the "Masked Man"
In the 4th great ninja war Minato himself says that he can't use sage mode efficiently. This because it requires a lot of time to gather that much chakra, and he is not adept at using sage mode.