Uzmaki clan technique (done)

Name: Kongō Fūsa Adamantine Sealing Chains
Rank: A
Type:Hiden(uzumaki clan), Ninjutsu, Fūinjutsu, Barrier Ninjutsu
Element: None
Range:Short to Mid range
Duration:  3 Posts/Maintable
Hand Seals/Charge up: How many seals does it take. this can also be in post times.
Description: This technique molds the user's chakra into chains which emerge from their back. After burrowing into the ground, the chakra chains erect a dome barrier of the highest caliber which prevent anyone or thing from neither entering nor leaving the perimeter defined by the chains. The barrier also will extend underground preventing escape or outside reinforcements to come in. The chakra chains will remain attached to the user and can be used to wrap around the target and bind them within the barrier the chains shot from the back and after burrowing into the ground, after which they would surface and criss-cross multiple times over the target, after creating the barrier.

Weakness: Chakra mainitaing cost, and once inside the barrier the target and the caster canot leave the barrier

Since you stated that the chains come from the user's back and dig into the ground, wouldn't that restrict the user's movements as the chains are still attached. + what kinda barrier? Circular, pyramidal?

just finished rewatching naruto episode 249 kushina was able to move in the barrier to protect naruto from the impending stab from the ninetails claw. the chains are actually the chakra chains so they can extend pretty far if u look up the chakra chains description in the clan on here.

Good but now, if the chains erupt from the back and dig into the ground, how would they bind a target?

edited

Approved.