Board Thread:Theories and Speculation/@comment-25025726-20161107172956/@comment-25122992-20161107174833

Sanbi221 wrote: But you need blood to use a Summoning Jutsu so would'nt that be an example of blood producing chakra? I don't think that the blood itself produces chakra in this case. I mean, blood is just a symbol that indicates your contract with the species you've chosen as your summon and thus is necessary for summoning it. Chakra, the actual source of the technique, comes rather from the user's palm, as seen when Naruto summoned Gamabunta.