At the end of year 47 of Konoha, the Third Great Ninja War drew to a close.
Because the Third Hokage had failed to secure substantial benefits for Konoha during the conflict, choosing instead to negotiate peace when holding a massive advantage, he had to take responsibility for the war. Under pressure from all sides, Sarutobi Hiruzen was forced to step down as Hokage.
Before stepping down, he strongly recommended the Yellow Flash, Namikaze Minato, whose fame had skyrocketed during the campaign!
Chapter 118