Board Thread:Theories and Speculation/@comment-45444155-20200806213256/@comment-31715856-20200807170305

ReweR 1331 wrote: Anything less is not senjutsu chakra, according to Fukasaku. I've seen this moment now.

Jirayu used Sage Mode, according to Fukasaku and third data book.

I didn't say Jiraiya didn't use Sage Mode, I said Jiraiya didn't use the TRUE Sage Mode. Which Fukasaku also says, and was obvious in the series. The point I was making was that even if the user is unable to perfectly balance the natural energy and control it (e.g. Jiraiya's imperfect SM), it's still possible to use Senjutsu so long as you have enough control over enough of the natural energy. This is the same idea behind Curse Mark users growing more powerful despite using a discount Sage Mode and much smaller amounts of weaker Senjutsu chakra.