How do hand-seals work when performed with another participant?


This is related to: [What is the difference when a jutsu is performed by
weaving only some of it's seals and when performed by weaving all of
them?](https://anime.stackexchange.com/questions/33913/what-is-the-difference-
when-a-jutsu-is-performed-by-weaving-only-some-of-its-se)

According to the answer, head-weaving is a technique used to manipulate chakra
to perform the Jutsu. Some users require more hand seals to perform the Jutsu
whereas other do not require as many due to their chakra control.

In Naruto Shippuden, Episode 374

> We see Kakashi and Obito having their battle in the realm where their
> Mangekyou Sharingan takes them. At roughly 8:30, Kakashi and Obito are in
> close quarters and Obito takes Kakashi's hand to perform the hand-seals for
> FireBall Justu.

How does the charka manipulation through hand-seals work when performing them
with another participant?




As said in the linked post, the hand signs are for the manifesting chakra,
while weaving hand signs. More the shinobi's skill and chakra control
increases, less the hand signs he needs to use. While techniques may require a
number of hand seals to work, a skilled ninja can use less or even one to
perform the same technique.

In the whole series, we've seen shinobi using hand signs with two hands, one
hand and even no hand signs, which requires a very precise control of chakra.
As mentioned in [this post](http://naruto.wikia.com/wiki/Hand_Seal), at
various instances shinobi of great skill like Itachi, Minato, Sasuke or Naruto
used even one hand signs or no hand signs.

But When using hand signs with another participant, they both need their
chakra to be in perfect sync with each other and should have a great control
over it. That's why Naruto and Sasuke could accomplish some jutsu.

Also, there were instances, like in Obito Uchiha using Kakashi Hatake's hand
for the Fire Release: Great Fireball Technique or Anko Mitarashi using
Orochimaru's hand for the Twin Snakes Mutual Death Technique. For these
instances, a shinobi needs to have a great amount of chakra, which he forces
to make it flow into other participant's body and gains control of other's
chakra (momentarily) to get his jutsu done.

Hope this answers your doubt. :)




As said in the linked post, the hand signs are for the manifesting chakra,
while weaving hand signs. More the shinobi's skill and chakra control
increases, less the hand signs he needs to use. While techniques may require a
number of hand seals to work, a skilled ninja can use less or even one to
perform the same technique.

In the whole series, we've seen shinobi using hand signs with two hands, one
hand and even no hand signs, which requires a very precise control of chakra.
As mentioned in [this post](http://naruto.wikia.com/wiki/Hand_Seal), at
various instances shinobi of great skill like Itachi, Minato, Sasuke or Naruto
used even one hand signs or no hand signs.

But When using hand signs with another participant, they both need their
chakra to be in perfect sync with each other and should have a great control
over it. That's why Naruto and Sasuke could accomplish some jutsu.

Also, there were instances, like in Obito Uchiha using Kakashi Hatake's hand
for the Fire Release: Great Fireball Technique or Anko Mitarashi using
Orochimaru's hand for the Twin Snakes Mutual Death Technique. For these
instances, a shinobi needs to have a great amount of chakra, which he forces
to make it flow into other participant's body and gains control of other's
chakra (momentarily) to get his jutsu done.

Hope this answers your doubt. :)

