Shingakure Sealing Technique

Shingakure Sealing Technique was crafted by the Third Village Head of Shingakure, Ryū Shimizu, to seal Tailed Beasts’ chakra within himself. With his massive chakra control and masterful hand sealing, he removed small amounts of an already sealed Matatabi with ease.

The user must first perfect the art of hand sealing with a single hand. They must also hold Yin and Yang Release. There are also requirements for those wishing to take in Tailed Beasts with certain nature transformations themselves; they must be familiar with them. Once the single-handed seals are complete, the user places their spread hand against the area they wish the seal to be. With each separate finger, the user releases the two must-needs as well as the natures the Tailed Beast has with their hand still flat against the surface the sealing scroll lay on.

If someone wishes to use this, they must first obtain the Scroll of Colored Ink hidden within Shingakure. However, those who have Ryū's DNA can summon it back as the red within the colored ink is his blood. They must also have clean chakra or have enough chakra control to separate the filth from the clear. Sasuke had a difficult time discovering this and an even tougher time separating the two.

There are endless risks when using this fūinjutsu. While kekkei genkai are needed when placing the beast in you, the beast can easily come at the user with said kekkei genkai. If the jinchūriki doesn't mastered it, the likelihood of them surpassing the strikes is unlikely, especially in their own Mindscape.

There’s also the issue with containing the beast. Ryū had perfect chakra control and clean chakra, so he had no issue containing Matatabi, but he failed to use its chakra since he wasn’t capable of taming the beast. Sasuke, on the other hand, was much more capable. He allowed Son Gokū to free roam in his Mindscape to gain trust, inevitably convincing Son Gokū to lend over some of his chakra.