Harmonization

Qi Shuang silently pondered: "Sage Mode strengthens the body's basic physical qualities with Natural Energy, thereby enhancing defense."

"But Ice Release: Chakra Mode covers the body's surface with chakra, thereby enhancing defense."

"Once the two are successfully fused, my whole-body defense will rise to an unimaginable level."

"By then, I'm afraid even Perfect Susanoo won't be stronger than me."

The Uchiha family's Susanoo had roughly three forms, from weakest to strongest.

The first was the initial skeletal form, whose defensive power already surpassed that of the vast majority of defensive techniques. Next was the mid-stage humanoid form, which appeared to have grown flesh and blood. At that point, few could stand against Susanoo.

Finally, and also the strongest, was the Perfect Susanoo. It grew a lower body and transformed into a complete armed giant.

In this form, Susanoo's defensive and offensive power reached their absolute peaks.

He still remembered how, in the story of his previous life, those two boys had fought to a draw in their Sage Fox Mode and Perfect Susanoo during the final battle.

As for a technique like Chakra Mode, it originated from the Jinchuriki's Tailed Beast Transformation.

Judging from the Fourth Raikage's battle record of physically fighting the Eight-Tails, Chakra Mode's defensive power was at least on the same level as a Complete Tailed Beast Transformation.

Qi Shuang's Ice Release was especially skilled in defense. In terms of defensive power, his Ice Release: Chakra Mode was probably even slightly stronger than a Complete Tailed Beast Transformation.

That so-called Sage Fox Mode was actually the product of fusing the Nine-Tails Mode of Complete Tailed Beast Transformation with Sage Mode.

The Nine-Tails Mode of Complete Tailed Beast Transformation was equivalent to the Nine-Tails' true form.

By the same logic, if Qi Shuang fused Ice Release: Chakra Mode