Contract Seal

When the user implements this fūinjutsu on a summoner, it removes any control the summoner has over a summoned creature. Close contact and the summoner's blood appears to be required for the implementation of the seal. Minato used this technique to wrest the Nine-Tailed Demon Fox from Tobi's control.

Trivia

 * Though this removes the control a summoner has on a summoned creature, this does not mean that the user of the technique gains control over the summoned creature.