Naruto: They Have Systems

Dozens of small chains suddenly sprang from the ground, forming a solid barrier in front of Kushina and blocking the enormous fireball Mikoto had unleashed.

"Is that... Adamantine Sealing Chains?!"

Tsunade couldn't help crying out.

Adamantine Sealing Chains was a Sealing Jutsu unique to the Uzumaki Clan, one particularly effective against Tailed Beasts.

As Mito Uzumaki's granddaughter, Tsunade was naturally familiar with the technique. That was why seeing it shocked her so much.

After all, this was one of the Uzumaki Clan's most closely guarded Sealing Jutsu. It was impressive enough for an ordinary clan member to learn it at all, but Kushina had mastered it at such a young age?

"No, that's not Adamantine Sealing Chains. Its chains aren't this small, and they aren't this weak."

After studying the chains closely, Tsunade gave her assessment.

"This must be a simplified version of Adamantine Sealing Chains. Did Kushina simplify it herself?"

The thought left Tsunade even more incredulous.

What Tsunade didn't know was that Kushina had received Adamantine Sealing Chains as a system reward, along with a great deal of proficiency in the Uzumaki Clan's Sealing Jutsu.

That was why Kushina could wield the clan's Sealing Jutsu so masterfully, even developing a simplified version of Adamantine Sealing Chains.

With this smaller version, the Chakra chains were smaller, their ability to suppress the Nine-Tails was weaker, and they dealt less damage to enemies. In return, the Chakra cost was reduced many times over.

After deploying it, Kushina used the Chakra chains to block Uchiha Mikoto's Fire Release completely.

Of course, Kushina could also use the full version of Adamantine Sealing Chains. But that technique was too powerful, and she didn't want to hurt Uchiha Mikoto, so she held back.

At that moment, Uchiha Yin was just as incredulous as Tsunade.

*Kushina