This is a high-level fuinjutsu created by Iro Kuguari to seal a portion of his life energy inside a scroll until it was needed. Afterwards, it was used by Kimza clan elites to entrust a portion of their power to a person of their choice. It is perfromed by channeling a majority of chakra into someone's eye from the user's, combined with a little bit of blood. The chakra creates a special seal within the iris of the target. This seal enables the user's Senchūgan to exceed its normal limits, and can even create a Senchūgan altogether if the target isn't a Ketsu. Sanhiro Ketsu's Senchūgan is as strong as it is due to the chakras of his father Arizono Kimza and his ancestor Iro. The three chakras combined to allow Saphiro to awaken a Dai Senchūgan in the future. Iro's seal also enabled him to