Marvel: The Imposter Inventor

End of Chapter 410 (Third Update)
density.

When used simply as a unit, it refers to the mass of a unit volume of a certain substance.

However, spiritual pressure, a unit that represents the density of spiritual energy, is slightly different.

Those powerful Shinigami, such as captains, may have spiritual pressure levels hundreds or even thousands of times higher than ordinary Shinigami.

However, these captain-level Grim Reapers are not significantly different from ordinary Grim Reapers in terms of weight, gravity, and appearance.

In contrast, when the spiritual energy density within a single soul is high enough, it can not only exert pressure on ordinary death gods, but its physical qualities can also far surpass those of ordinary people.

When the difference in spiritual pressure is too great, even the slashes of ordinary Shinigami cannot penetrate the skin of a captain-level Shinigami.

If the difference in spiritual pressure is as great as that between Aizen and Soi Fon, even the power of her Zanpakuto might not be able to affect them.

It is worth mentioning that spiritual energy density is not the same as spiritual particle density.

All matter in Soul Society is composed of spiritual particles. Even substances like steel and rocks have varying densities, but no matter how much spiritual power is poured into them, soulless objects will not generate spiritual pressure.

Initially, in order to fight against Aizen's Kyoka Suigetsu, Luca had undergone modifications to his body, including the installation of a prosthetic eye and a brain-computer interface chip.

However, these things are made from ordinary spiritual matter, which is incompatible with his own body.

Of course, this isn't really a big problem.

After all, even in the real world, the metal used for cybernetic enhancements doesn't require fusion with the body to be effective.

However, after Luca officially became a Shinigami, he discovered that although the Shinigami uniforms he received did not have a soul or physical form, they could perfectly integrate into his body after being bound to him.

Furthermore, as one's spiritual power increases, the spiritual pressure contained within the Shinigami robes also increases.

Of course, if that were all, it would simply be giving the ordinary Grim Reaper an extra layer of skin.

The meager defensive power it provides makes little difference whether swords or knives strike clothing or flesh; they will still break through regardless.

But the truth is, it was just a coincidence.

Luca's Zanpakuto core key's 'import' ability allows him to continuously infuse spiritual energy into any object or living being.

Originally, if Luca wanted to use this ability to infuse spiritual energy into his body, the total amount of spiritual energy would remain unchanged, and naturally, the spiritual pressure within his body would not change at all.

However, once the Death Armor is in existence, Luca can repeatedly infuse it with spiritual power after taking it off, continuously increasing the total amount of spiritual power within it through 'infusing, consuming, and then infusing again'.

Once the Shinigami Suit is donned and becomes one with the body, it acquires the 'soul creature characteristics' and also gains spiritual pressure attributes.

This garment itself does not possess any attributes such as 'strength' or 'speed', nor does it feed spiritual energy back to Luca.

However, its sturdiness, spiritual pressure, and even the effect of guiding the spiritual energy within to release attacks have been increased countless times, even achieving an effect similar to the steel skin of a Hollow.

Based on this, Luca was naturally not satisfied with merely using it as a means to enhance defense.

In subsequent research and modifications, Luca transformed his removable outer skin into a full-body mechanical armor.

It relies on the solid defense formed by high-density spiritual energy to protect itself, on the terrifying spiritual pressure attached to it to resist the spiritual pressure impact of the enemy, and on the spiritual energy that is constantly poured into it to enhance the power of releasing the Kido.

This full-coverage armor, called the 'Shinha Suit,' effectively protects the 'weak' Luca within, allowing him to unleash combat power several times greater than his own spiritual pressure level through his control.

Furthermore, spiritual power possesses the characteristics of being easily compressed and readily materialized.

Luca went a step further, achieving what he hadn't fully grasped in the real world: 'nano-like technology,' compressing the entire 'Shinha Armor' into its ordinary Shinha form when not in combat.

Without adding weight and being easy to carry, it also avoids excessive dissipation and consumption. Only when it is truly necessary to fight an enemy does it rely on the spiritual power input from the Zanpakuto's core key as a 'key' to activate this 'spiritual nanosuit', and it can also rely on the 'meager' spiritual power within its own body to slightly increase the suit's endurance.

In fact, Soi Fon's guess was not wrong.

Luca forcibly released Kido Drive through the engine nozzles all over the armor, increasing the armor's speed and attack power. This is essentially a combination of Hakuda and Kido, similar to 'Instant Opening'.

The final effect of all these superimposed elements is...
"boom--"

The iron fist, wreathed in raging flames, slammed into Kenpachi Zaraki's chest once more, knocking him back and burning his already tattered captain's haori to ashes.

Only, this time.

Kenpachi, who had taken two steps back, immediately regained his footing and unleashed a powerful, air-tearing slash at Luca.

"Dang~"

It was that familiar sound of metal clashing again.

Unlike the previous times, this time Kenpachi's slash actually shattered Luca's left arm armor as he raised his arm to intercept.

In the friction, the blade, which looked like it had been chewed by a dog, almost broke through the armor's protection and cut into Luca's arm.

"Hey! You seem to be getting weaker!"

As he spoke, Kenpachi Zaraki revealed a ferocious smile again and began to slash wildly like a wild beast, without any strategy or method.

Like a diligent blacksmith, he hammered Luca's black armor with a clanging sound, sending iron filings flying everywhere.

"Damn it! You're the one who got stronger!"

Luca, who had been continuously parrying and counterattacking, muttered somewhat helplessly.

Although his strength had indeed weakened significantly due to the Death Armor's spiritual energy dissipating much faster than expected, and the repeated bursts of 'pseudo-instantaneous opening'.

The root cause of the current situation is that Kenpachi's strength continues to rise even after he removed his eyepatch and unleashed a burst of power.

It's important to understand that the depletion of spiritual energy and the weakening of spiritual pressure actually have the greatest impact on the armor's own hardness.

However, as long as the hardness is sufficient to prevent the armor from disintegrating, and Luca ensures the output of the jet engine, the actual reduction in attack power is extremely limited.

However, the reality is that Luca's output has increased from the initial 70% to an overloaded state of 120%.

However, the effect has changed from initially being able to send Kenpachi flying with a single punch to now only being able to make the opponent sway slightly.

Seeing that the spiritual energy was dissipating faster and faster, and that the repair was gradually failing to keep up with Kenpachi's destructive speed, the armor could be broken through and disintegrated at any moment.

Luca decisively took advantage of the clash between fist and sword to fly backward.

Then, without waiting for Kenpachi Zaraki's next attack to hit him, he...

Luca spread his hands and lay down on the ground, motionless.

"I'm not fighting anymore! I give up!"

"If you still want to fight, just kill me!"

(End of this chapter)