Chapter 1

Konoha

On the training grounds, two figures stood on opposite sides. The two figures are Rimuru and Sarutobi Hiruzen.

They stood on a wooden platform created using wood style. Hashirama Senju, the first hokage, is the referee for this match.

This match is a gambling bet to see who would get to teach Hashirama's granddaughter, Tsunade, who sat on a wooden chair, excitedly watching the up-coming battle.

"Brother Rimuru! I'm cheering for you!!"

The sweet and milky voice of tsunade was heard.

She was very excited to see a duel between ninjas, even more so between two genius ninjas.

3 years ago, a handsome boy appeared out of nowhere in the hokage's office.

The handsome boy had light blue hair and golden eyes, he wore some weird clothing that doesn't resemble anyone in this world.

A bluish black silk robe that covers most of his body and black leather boots.

At first, hashirama was alert at this boy, who looked to be 12 years old, appearing so suddenly. Anyone would be alert at this.

The boy was confused at first but after a few questions from the two sides, they both got a general understanding of each other.

The boy introduced himself as Rimuru.

Rimuru is a traverser.

A very special kind of traverser.

He's a otaku(Not the hardcore otaku but the casual one.) so he quickly adapted to the situation and accepted it all.

He was then accepted to be hashirama's adopted grandson because of his special situation.

Through the 3 years, he was shown to be a genius in taijutsu.

Although hashirama didn't care about his talent but the villagers often whisper about the weakness of Rimuru because his talent for ninjutsu is basically null.

After all, the first hokage is the god of shinobi, the number one ninja in the world, a person who can suppress all the tailed beast and the other 4 great villages.

Now comes a grandson that doesn't have any talent for ninjutsu, obviously those jealous of the high treatment of this supposed grandson would retaliate.

Not directly because behind him is hashirama senju but obviously through despicable means such as rumors.

Not even the hokage can change people's thoughts.

Anyway, he joined the senju family, being named Rimuru senju.

Since he became hashirama's grandson, he would obviously live in his own room on the senju compound.

A very luxurious compound.

Through living there, he was very bored so all he did was train and play with his sister which would be tsunade, the granddaughter of hashirama.

They gradually got familiar and due to tsunade's parents were absent, they stayed with each other, being as close as brothers and sisters.

A month before the present situation happened, a system suddenly appeared in Rimuru's mind.

The system's name is Lolicon Teacher System.

Some otakus are normal while some otakus are lolicons.

Rimuru is the latter.

Though he is only a mild lolicon, meaning he ain't the type of person to just be hungry when seeing a loli.

The system has 4 functions.

The first is to Find a loli with high potential and train them.

The training is just to teach them to their peak powers, I.E. their own jutsus and strength that they have at their peak state.

They could obviously be trained to be even stronger than their peak but that would require more stuff or more effort.

When training to their peak, the host I.E. Rimuru would get all their abilities at their peak so that is a bonus to him and when he finished training them to the system's requirement then he would receive a reward.

The reward is a random items or abilities ranging from trash like substitution jutsu or a kunai to god level items like Rinnegan (Full proficiency) or Infinite Chakra.

The second function of the system is a sign-in function which will give sign-in missions for Rimuru to sign-in and he'll get rewards if he does so.

The third function is the template functions which allows Rimuru to draw any template in the tens of thousands of worlds.

Each draw requires Rimuru to take any of his students to their peak state.

Very simple enough.

The last function is mission function which sends optional missions for some extra rewards.

Though it is optional, there would be penalties if the mission failed.

With the system explained, Rimuru's first student he thought of was Tsunade senju and thus the duel was held with a strong contender, Sarutobi Hiruzen, the future third hokage.

To the present, The two men stood at each side.

Hiruzen's strength has just entered jonin level while Rimuru barely reached jonin.

Barely and entered jonin may seem like a small gap but it is actually very big.

Rimuru held a kunai, looking towards hiruzen in vigilance.

"Fire Style: Fireball Jutsu!"

Forming a series of hand seals, hiruzen spit out a huge fireball.

The surrounding temperatures immediately rise as the huge fireball went towards Rimuru.

The huge figure of the fireball seems able to completely crush the small and frail-looking figure of Rimuru.

*boom!*

*puff*

"Substitution?"

Seeing rimuru turn into log with a puff of smoke, hiruzen quicky scanned his surroundings, wanting to find the figure of rimuru.

"Leaf Village Secret Finger Jutsu: One Thousand Years of Death"

A voice sounded behind hiruzen; he was about to turn around when he felt a sharp pain at his bottoms.

'f*ck' was all he thought before he passed out in pain.

"Brother Rimuru! You beat pervy monkey!!"

A small figure rushed towards Rimuru in excitement. Her voice awoke Rimuru who was in a daze.

'Is hiruzen this weak…?'

This was Rimuru's thought, he thought it was too easy to beat hiruzen, the future god of shinobi.

What he didn't know is that a number of factors caused this to be the case.

The pain that the jutsu caused was very exaggerated and the pain tolerance of a mere jonin can't handle it.

The other factor is that when Rimuru used the technique, he pumped in all his chakra.

The difference between no chakra and all chakra is not as simple as 1+1, you know?

Just because rimuru has no talent for ninjutsu doesn't mean his chakra volume is non-existent.

When seeing the self-created technique in action, hashirama was shocked.

Not because of its lethality but because of the pain and humiliation it can cause.

Hashirama: I admit he defeated my brother in this area of creating jutsus.

Hashirama walked towards the happy siblings and announced: "Rimuru, you can be the teacher of my granddaughter. I just hope you won't teach her that technique."

"Huh? Why grandpa?" asked tsunade.

"Ahem, It's not something kids should know."

Rimuru looked at hashirama with contempt and quietly thought.

'Your tsunade has learned your gambling habits already yet you say this?'

When hashirama left Rimuru to teach his granddaughter, a series of prompts sounded in his mind.

[*Ding, Congratulations to the host for accepting "Senju Tsunade".]

[*Ding, Sending Novice giftpack…]

[*Ding, Sending Teaching materials: Summoning contract: Katsuyu, Medical Ninjutsu, Chakra Enhancement…]

[*Ding, congratulations to the host for getting his first student. Sending a free template draw.]

'Eh?'

Rimuru was confused when seeing a reward he got but quickly became excited.

'A free template draw? That's awesome system!!'

'Use the free template draw now!'

[*Ding, using free template draw…]

[*Ding, you got "Whitebeard, one of the four emperors of the sea" template.]

Hearing this, a touch of shock appeared in his golden pupils.

Whitebeard has the title of strongest man in the world.

He is also one of the four emperor of the seas.

An overlord and one of the pirate giants of the old era.

He only fell in Marineford because of his illness and declining strength and even then, it took thousands of elite marines, dozens of lieutenant generals, and the 3 admirals.

Although whitebeard has the support of his crew and his subordinate crew, he still fought at the forefront of the battle.

Severely injuring Aokiji and Akainu.

This just goes to show how strong he is and even more so when at his peak.

His main attack is the tremor-tremor fruit.

The tremor-tremor fruit makes the user a tremor man which allows him to create massive vibrations.

Sengoku, the marine marshal, once said that the fruit has the potential to destroy the world.

This goes to show the great terror of the devil fruit ability.

Quickly calming himself, he decided to integrate the teaching material first then worry about increasing the template proficiency which is needed to slowly unlock whitebeard's powers.

"Integrate the teaching materials."

A warm current flowed through his body, invigorating and strengthening his cells. His chakra amount quickly skyrocketed to peak kage-level and his physique is also increased greatly.

A feeling of great power flowed through his veins as countless medical techniques and ninjutsus appeared in his minds.

It encompasses the understanding and knowledge tsunade from ninjutsu to medical ninjutsu.

…