A/N:- Happy Halloween Guys

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Izuna closes his eyes and feels the Nature energy.

After meditating for a while, he feels a tingling sensation over his skin. His body absorbs nature energy at a slow pace.

'I can sense the Nature energy but the rate of absorption is quite slow. It will take me a while to absorb it at a rapid pace. I have to practice a lot in order to absorb Nature energy. Now let's try the unusual method.'

Izuna activates his Sharingan and observes the entire process. He can see Nature energy entering his body through his tenketsu points.

'So, this is Nature energy.'

Izuna looks around and spots an enormous amount of Nature energy being released by the gigantic tree. Let me try to absorb this energy directly.

He calms his mind and focuses his concentration on Nature energy. He releases his chakra from his tenketsu points. The released chakra wraps around Nature energy and tries to pull it inside his body.

'Heavy! It feels so heavy. I can feel the will of the planet inside this Nature energy. I have to contest with the planet for this energy.'

Izuna clenches his teeth and releases more of his chakra to drag the natural energy. He drags the Natural energy inside his body.

He gains a Cyan color Chakra cloak around his body.

'So, this is Nature energy. I can feel my body rejuvenating from this energy. My physical strength had grown quite a lot. It feels like I can easily punch a large hole through that earlier tree quite easily now.'

Izuna clenches his fist and punches the air with full force.

BOOOM…

His punch produces shock waves. The 'Sin Seal' activates and absorbs the Nature Energy, leaving Izuna out of the Sage Mode.

"Wow, Izuna-kun, that was amazing." The Optical tentacles of Katsuyu shake in excitement.

"You could enter the Sage Mode for a while. Though only for a brief moment. But that was the genuine Sage Mode. You are a genius, Izuna-kun. At this rate, you will perfectly master the Sage Mode in a few weeks."

Katsuyu praises Izuna. The cloak around him disperses and Izuna returns to normal.

'And it's gone! This fucking seal. It has to eat everything like a snack. It ate my Chakra for three years, I finally got rid of that problem with Yin Kurama. But now it is sucking my Natural energy. Just you wait, I will see how you will drain me again.'

Izuna infuses Light Chakra and mixes it with Natural Energy. The Sin Seal stops on contact with Light Chakra and lies down silently.

In these three years, he had figured out more about the 'Sin Seal'. This is quite a gluttonous seal, it will continuously suck chakra from Yin Kurama and will occasionally stop when it is full.

He can still use that stored chakra, but only in the form of Darkness Chakra, Fuinjutsu seal, and for a dark Susanoo. So, this seal embodies darkness. It will repel anything related to Light. Part of the reason, it stops its mischief when given a dose of Light Chakra.

'I still can't recreate that jutsu.'

Izuna remembers the jutsu he used against that cloaked figure.

'I can't balance the Light and Dark Chakra to replicate that feat. Both of them repel each other, and I haven't figured out a way to balance them. I am missing something crucial in the process.'

Izuna sighs and closes his eyes to concentrate again.

'Still, there is one benefit of this seal. It won't allow me to turn into a stone while absorbing excessive Nature energy. It will suck that extra Nature energy and keep me safe. I want to get rid of this love and hate relationship with this seal.

Now let's practice in the usual way. I will use the other method only during emergencies to immediately get into Sage Mode. I have to still learn the normal process, then only will I able to learn the secrets of the 'Six Paths Sage Mode'.'

"Time to use the most broken jutsu to speed up the process."

'Shadow Clone Jutsu'

Izuna creates three shadow clones. The clones sit around the tree and enter into meditation.

"What are you doing, Izuna-kun? Why are you making Shadow clones?" Katsuyu looks at Izuna in surprise.

'There is no harm in telling her. She can't exploit the Shadow clone herself.'

"Lady Katsuyu, I am using Shadow clones to hasten up the process of learning the Sage Mode. Whenever a shadow clone disperses, it transfers all of its memories and experience to the Original body.

This way, I can cut short on time and learn many things simultaneously. But there is a drawback to this trick, many clones when dispelled will cause an information overload in the user's brain. This is the reason why I am only using three Shadow clones to speed up the process by three times.

Any more than that will break my concentration. So, I have to be careful while using this technique." Izuna explains to Katsuyu.

"That's quite convenient, Izuna-kun. You can continue your practice, I will continue to monitor your progress."

Katsuyu rests against the boulder while shaking its optical antlers.

Izuna continues to practice the Sage Mode. He practices the Sage Mode for a few days.

'I guess I have got a hang of it, but I am yet to completely master the sage Mode.

Guess I have to raise the difficulty by a notch.'

Izuna climbs up on the large tree. After reaching a spot where the wind current is quick, Izuna stops and concentrates again.

'There is quite the pressure here. These wind currents will harass me and will disrupt my concentration. If I can enter and maintain 'Sage Mode' under such conditions then I would have perfectly mastered the Sage Mode.

The next step would be to enter the Sage Mode while running. Naruto wasn't able to figure that out, but I will give it a shot. If I can enter the Sage Mode while running, then I will able to enter Sage Mode during combat.

The next step is to just create the Sage Arts Jutsu. I will think about that later.'

He closes his eyes to sense the Nature energy while sitting on one branch of the tree.

'Hard, it is quite hard. But I have to hold on.'

Soon, Izuna enters in a meditative state, and his body absorbs the Natural energy.

A while later, a cyan-colored cloak appears on his body. The cloak flickers as Izuna struggle to maintain his concentration.

Haah… Huff…Huff

The cloak disperses, and he pants.

'I have to practice again.'

He clears his mind and enters in concentration again. Katsuyu looks at his figure and murmurs to herself,

"He is progressing much faster than anyone else. Even Hashirama Senju-sama could not progress this much in such a short period.

His Sage Mode is quite different compared to others. He has a Chakra cloak around his body. Hashirama Senju-sama had markings reminiscent of Kenshiro Senju-sama, but his Sage Mode is quite different."

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Days passed by,

Izuna had perfectly mastered the Sage Mode. While in Sage Mode, he has a cyan color Nature energy Chakra Cloak around his body. His eyes had golden and silver markings around them, and his Sharingan keeps its color.

'I can sense this tremendous boost in power. Somehow, my sage mode is quite similar to Mitsuki. But I don't have a horn on my head and I retain my form. I do have a perfect affinity for all kinds of energy.'

"Time to test my powers. Let's start with my speed while using Nature energy."

'Swift Release: Sonic Steps'

Zoom…

Izuna crashes into a boulder. He stands up and dusts himself.

"That was quite fast. I never expected it to be so fast. I didn't even felt a thing in that collision. My durability and natural defense have increased by a lot.

Then what about my strength? How strong am I?"

Izuna lifts a large boulder easily and throws it far away. The boulder smash into a hill and lodges into it.

"Impressive. Your strength is impressive, Izuna-kun."

Katsuyu praises Izuna.

"Now it is time to enter Sage Mode while running. If I can overcome this challenge, then I don't have to worry about anything. I can fight tirelessly for many days without exhaustion. Nature energy will rejuvenate my body with vitality."

Izuna runs around while trying to concentrate. His clones follow his movements and try to enter Sage Mode.

"It is quite difficult and borderline impossible. I have to think of a solution for this to work."

Izuna stops and ponders on this problem.