Izayoi Sealing Technique

The Izayoi Fūinjutsu is renowned as one of the strongest Fūinjutsu to exist, and was created by the legendary sage Gennousuke Yoshitsune for the sole purpose of suppressing large bodies of chakra, such as tailed beasts, within an object or a person. Because of its extensive preparation time and the amount of chakra a person utilizes in properly sealing the chakra into a person, it is not often used for jinchūriki.

The user of the technique must create the seal for the Izayoi, by writing the seal on a piece of sacred prayer paper, and then submerging it in a pot over a boiling fire for 16 days, with it being exposed to the moon for 3 days. The pot is adorned with multiple seals and papers depicting more seals, and is bound tightly. Once the 16 days are up, the user takes the prayer paper and infuses their chakra within it. The paper must come into contact with the tailed beast, where it will then rip the tailed beast back into chakra and seal it within the seal. The seal must then be applied to the stomach or back of the jinchūriki within three hours, so that the seal unifies with the soul and allows the proper bounding of the tailed beast. The seal must be held their for 3 hours, after which it can be removed. A black imprint of the seal will appear on the stomach/back, and the seal written on the prayer paper will fade, showing that the tailed beast's chakra has been sealed within the soul, unified, and then bound my massive torii, pinning it down on every orifice.

The requirements of this fūinjutsu is massive, as it takes a skilled user of the fūinjutsu many days to properly seal the tailed beast within the person and even then, errors can be made, in the case of the previous jinchūriki of the Five-Tailed.