Seven Heavens Sealing Style

The Seven Heavens Sealing Style is a unique fūinjutsu devised by Devi Ōtsutsuki, which she used in conjunction with her cousins Asura and Indra to seal away her aunt, Saimei Ōtsutsuki.

Overview
Devi designed this seal with no ill-will in mind, as the victim is essentially suspended in time for as long as the seal remains unbroken, neither aging nor starving. The seal also seems to require a great deal of chakra input, as Devi still required some assistance from Indra and Asura in completing the seal, with all three possessing remarkable chakra. The seal is also fairly resistant, lasting nearly a millennium before being broken by a group of people with a relatively high enough chakra tier.

Trivia

 * The Seven Heavens is a concept present in Mesopotamian, Indian and Abrahamic religions, where Heaven, the abode of deities and encompassing the sky, sun, moon and stars, is divided in seven planes or divisions.