Board Thread:Theories and Speculation/@comment-45444155-20200728155230/@comment-45444155-20200731224129

BloodOfTheArchon wrote: I think Jiraiya was imperfect because he could not use Sage Mode without Fukasaku and Shima, another words he couldn't really do it on his own. I think he took on toadlike features because he had Fukasaku and Shima fused to his body.

No. In chapter 418, the words Fukasaku imply that Jirayu always had body changes when activating Sage Mode. In Chapter 420 Naruto is shown together with Fukasaku, and Sage Mode Naruto is the same as without Fukasaku.