Naruto: I Am Crazy with the Simulation System!

With the last barrel of thick snake oil poured in, the entire training chamber was completely filled.

The White Sage Snake narrowed its pale eyes. Seeing that you had entered deep meditation and could no longer pay attention to the outside world, it grinned slyly and pulled out a tightly sealed vial from beneath its scales.

The bottle tilted downward, and the dark red, oil-like liquid within slowly mixed into the snake oil.

...

You sat cross-legged within the Dragon Vein, completely suppressing your chakra to prevent it from mingling with the surrounding natural energy—cutting off the possibility of forming the inferior god-force known as senjutsu chakra.

Focusing completely, you followed Ryūchi Cave's method of senjutsu training, circulating your chakra through your meridians while absorbing the surging natural energy and the potent power within the snake oil.

With each rhythmic breath of absorption, waves of increasingly intense natural energy erupted from within the Dragon Vein. The purity and density of that energy gradually reached a level even a member of the Ōtsutsuki clan would struggle to digest in a short time.

At that moment, the dark red liquid infused in the snake oil seemed to activate. Borrowing the overwhelming natural energy, it stirred the refined power hidden in the oil and began flowing into your body on its own.

Yet your consciousness remained clear—you understood that the key to senjutsu training was to guide natural energy with your will, not to let it rampage freely within.

But as the dark red liquid crept into your body...

...a whisper-like voice seemed to echo beside your ear, urging you to drop your guard.

Finally, the natural energy concentration outside reached its peak.

Even with your Ōtsutsuki body, the sheer intensity of this energy was suffocating. Your ability to absorb, convert, and compress it barely scratched the surface.

Then, that dark red liquid seemed to take on a will of its own. Blending with the unknown elements in the snake oil and the power of the Dragon Vein, it became a massive torrent that shattered your defenses and surged into your body.

The moment the dark red snake oil entered, you immediately activated your Sharingan—instantly realizing this substance was far more than just snake oil.

It concealed a deep, ancient bloodline power...

And that power was not limited to a mere snake!

Its strength could pierce through the defensive barrier you'd constructed using your own Ōtsutsuki bloodline.

In other words, its bloodline strength was no weaker than the Ōtsutsuki's!

And due to its hold over the terrain, it even suppressed your own bloodline for a time.

You could faintly sense something within it stirring—on the verge of awakening.

You snapped your eyes open in alarm, only to find your body already covered in white scale armor. The two horns of the Ōtsutsuki, usually hidden beneath your forehead's skin, were now pushing outward, ready to break free.

No—you're transforming into a snake!

You remembered that no human had ever succeeded in training in true senjutsu at Ryūchi Cave without undergoing some level of snake transformation. Could it be that only by taking snake form could one cultivate?

But if you truly transformed into a snake, that would mean letting the dark red bloodline run rampant through your body.

And once that foreign bloodline broke free, your mind would be consumed—your consciousness devoured!

Realizing this, you instantly summoned the red orb formed by the nine Tailed Beasts—a gem meant to simulate the Ten Tails.

You were about to unleash its power to refine the surging natural energy into your own chakra, but you noticed—

—the natural energy within you hadn't yet been compressed to the threshold required to be called divine power!

If you activated the orb recklessly now, you'd disrupt the formation of true divine energy—power comparable to Truth-Seeking Balls—and it would instead convert into the degraded version: senjutsu chakra.

And once natural energy and chakra merged, they could no longer be separated.

That would mean permanently losing your chance to ever draw divine power from natural energy again!

Not only would you lose godlike power, but you'd end up like Kabuto from the original timeline—a half-human, half-snake freak.

One path led to your mind being consumed by the red bloodline...

The other to forever losing the right to gain divine power through senjutsu.

But you refused to choose either.

"No... then I'll just have to fight!"

In desperation, you activated your Sharingan to its limit, channeling your Ōtsutsuki bloodline and the dual laws within to suppress and devour the bloodline power invading your body.

But it still wasn't enough.

The concentration of natural energy kept rising.

The opposing bloodline seemed bound to it—endless, infinite. Even drawing on your full bloodline strength only barely stemmed its spread within your body.

The snake transformation was still progressing...

No, this won't work! With a determined thought, you summoned all the bloodline essence stored in your divine realm.

Gulp, gulp, gulp...

Not only did you drink it, but you poured the bloodline essence across the Dragon Vein chamber, allowing it to merge completely with the snake oil.

Then, you activated Body Activation Jutsu and simultaneously cast Fission Jutsu.

One body frantically absorbed and awakened your latent Ōtsutsuki bloodline—

—while the other half, through the splitting technique, constantly dispersed the surging red bloodline power invading your form.

Under this extreme regeneration and fragmentation, your body sustained massive damage.

But because of that precise manipulation, in one rare instant, you sensed a strange balance forming between your bloodline and the dark red bloodline—

They actually began to coexist!

If you couldn't reject it, then you'd fuse with it!

With a single command, the divided bodies—linked to your will—immediately returned to the main form.

Within your body, the bloodlines clashed, mingled, and frantically drew in external natural energy and bloodline essence.

Your Ōtsutsuki bloodline began to merge with that dark red power...

The wild rampaging through your limbs ceased.

And only now did you realize how fragile your body truly was. Even with all your training, it couldn't withstand the overwhelming force produced by the fusion of two equally mighty bloodlines.

Even maintaining Body Activation Jutsu couldn't stop your body from gradually falling apart...

Gate of Rest, open!

Gate of Life, open!

From within, a surge of green energy burst forth, mixed with the red mist of ruptured blood cells.

Your body began to shatter and regenerate.

In that process, you seemed to grasp the secrets of cellular structure, deliberately destroying and rapidly rebuilding cells—reconstructing them again and again until they evolved into their optimal form.

With each cycle, your Endurance soared like a rocket, while your Spirit grew tougher under the tempering.

Even your Sharingan began rotating faster—its Ocular Power rising exponentially!

Watching you gradually adapt to the natural energy and fully absorb and fuse with the foreign bloodline, the White Sage Snake couldn't help but feel a twinge of disappointment.

It had hoped to devour you.

It was pained at the loss of the ancestral bloodline.

But on second thought, as you two had previously agreed—having another powerful ally wasn't such a bad thing.

Besides, with the ancestral bloodline now fused within you, you were now one of the Ryūchi Cave's own.

It stopped its tricks and instead began earnestly channeling the power of the Dragon Vein toward you, helping you master senjutsu and one day form divine power of your own...

In the blink of an eye, a full year passed within the Dragon Vein.

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