Thread:Blade0886/@comment-26418719-20151125172515/@comment-26418719-20151125175538

But by your logic Tsunade would be the Eighth, based on what happened when Minato died (Hiruzen resumed office) which would technically make him the Fifth Hokage. When a Hokage resumes office, they still remain whatever number hokage they were before- Hiruzen was still the Third Hokage even when he took over after Minato's Death, not the Fifth.