To perform the user must have a direct contact with the target. After preforming the set of hand seals, the target will be drawn into the object or person they are intended to be sealed within followed by the sealing formula appearing on the target's stomach. The seal was not automatically visible on Kūkan's belly, but became perceptible whenever he drew Gyūki's chakra. The seal is quite flexible in that it can be opened and closed again, allowing the jinchūriki to freely access the tailed beast's power.