Board Thread:Naruto Discussions/@comment-25374031-20140917212238/@comment-5407586-20140918095859

HagoromoOtsutsuki wrote: JOA20 wrote: No. Jiraiya, as stated by Fukasaku, was unable to perfectly balance physical, spiritual and natural energies, and as such couldn't enter a "perfect" Sage Mode. According to Fukasaku, one becomes a "true" Sage when the only physical changes are the markings around the eyes (and the horns in Kabuto's case). Scan for that statement? Chapter 410 and 418.