Crack…

Sound of something cracking echoed in the surrounding. ​​

'Did I successfully break the floor?'

An instant later, a sharp pain ran across my leg all the way to my brain.

'Fuck! I broke my leg.'

I immediately sat on the ground and inspect my leg with X-Ray. I broke the bone near my ankle from the impact.

The bone connects as my healing factor kicked in. After a few seconds, it returned to normal. I stood up and checked the point of impact on the floor.

There is no trace of any damage to the floor. It is still intact and appears brand new.

'Fuck! What kind of material is this? It is so hard. Let me try again, this time with my Susanoo.'

I created my Susanoo. A large humanoid skeletal construct of Chakra surrounded me. I clenched my fists tightly, and the Susanoo followed my lead.

Bang…

I smashed the fist of Susanoo on the seal. A large amount of dust and debris rose from the impact. The dust settles to reveal the seal.

There is a slight dent on the floor. Some strange Chakra leaks from the ground and starts to fix the dent. Within a few seconds, the floor returns to normal with no sign of any prior damage.

'It even has a restoring seal within the mix. How will I decipher this seal?'

Something clicked in my mind. I ransacked my storage scroll and fished out a vial with some blood inside it.

This vial contains the blood of Sister Kushina. She gave it to me while teaching some blood-related Fuinjutsu seals. I carefully took out a drop of her blood and placed it on top of the seal.

'Now, I have to wait for some sort of mechanism to trigger which can detect the blood of Uzumaki's and open the passage for me.'

Fifteen minutes passed by and there is no reaction from the seal.

'Seriously, How the fuck. I decipher this fucking seal. Shouldn't the seal open with the blood of an Uzumaki descendant. Kushina Nee-san is an Uzumaki princess at that, but there is no response from the seal.'

I have tried every possible way to decipher this seal, but I failed constantly. My hopes start to crumble and I almost gave up on this seal.

I take out those Oni-mask once again to see any reaction from them. I even peeked through the eyeholes of the masks to examine the seal. But it only ends in failure.

'Damn! I have wasted my time on this trip to the Land of Whirlpool. After I grow stronger, I will return to break this damn seal.'

The mask accidentally slips from my hand and fell towards the floor.

'This mask is quite sturdy, it won't break from these minor falls.'

The mask fell on the floor and shatter into many small pieces after the impact with the hard floor.

"What? How is this possible? That's a Shinigami summon mask. How it turned so fragile suddenly…"

The remaining words left stuck in my throat as I stare at the remains of the mask with wide-eyes. The strange Chakra from the ground seeps out again and coats all pieces of mask in it.

The Chakra pulls the pieces and arranges them in a certain pattern. After a while, the strange chakra settles down.

'So, that's the real purpose of this mask. This is the reason these masks were placed inside Konoha. Uzumaki clan preserved their heritage by hiding the keys inside the Konoha in form of Noh Masks. How smart of them?

Let me take a look at their heritage. In the future, I will bring Kushina and Naruto to take a look at this. Naruto never inherited his Uzumaki heritage. There is so much potential in Fuinjutsu. Naruto had Uzumaki bloodline, he should have a decent talent for sealing.'

I take out the other Oni-Mask and throw it on the ground. The Oni-Mask shatter and complete the key. The seal lights up and activates.

The ground rumbled as the seal opens in a spiraling matter similar to the seal to reveal staircases. I activate my Sharingan and carefully walk inside the passage using stairs.

There can be many Fuinjutsu traps within the passage, and I don't want to accidentally trigger them and blow up myself. After descending the stairs, I face four different passages leading to different locations.

'Such tricks are old game.'

'Shadow Clone Jutsu'

I make four shadow clones and send them to respective passages. After a few minutes, some information enters my brain as three of my clones are dissipated.

They are destroyed by some traps laid withing the tunnel. I continue along the safe path and reach yet another hallway with four different passages.

"Ah, shit! Here we go again."

I make another four shadow clones and continue along the next safe passage. Finally, I reach the end of the passage and enter a hall.

There are various shelves with many scrolls, weapons, and other strange items laid on these shelves.

Without hesitation, I move towards scrolls. I activate my Sharingan to scan for traps. After ensuring the absence of traps, I start to read these scrolls.

"Holy Shit! So many powerful A-Rank and S-Rank seals. This is a treasure trove, the real inheritance of Uzumaki clan."

I frantically start to copy these jutsus in my memory using my Sharingan. After five hours of study, I sit in the center of the room as I start to digest a large amount of information.

A large grin appears on my face as I can feel a rapid improvement in my expertise in Fuinjutsu. These complex seals appear simplified in my mind as I decipher and learn them one by one.

Another ten hours pass and I have finally digested and learned the entire list of seals.

"Now, I only need to practice them. I will make a copy of them and give them to Minato and Kushina. It will increase their chance of survival in case something happens to me."

I notice another scroll encased within a glass.

'That must be another powerful Fuinjutsu technique. Maybe the most powerful among them.'

I try to touch the glass, but my senses warn me of danger. I inspect the glass carefully and I find a Bloodline seal on the Glass. I drop another drop of Kushina's blood on the seal.

The seal starts to glow brightly, and the glass panel separates in half to reveal the scroll. I carefully pick the scroll while on guard against any trap.

I open the scroll and start to read it. I am surprised by the contents of this scroll.

'This is the hidden technique of Uzumaki clan passed through their bloodlines.

'Adamantine Sealing Chains'

One of the most powerful sealing techniques of the Uzumaki clan capable of sealing even a tailed beast with its power. This is a good grab, I should memorize this technique and practice it.'

It read the scroll, and the technique seems very familiar to me.

'Hmm… isn't it similar to my 'Corrosion Chains' technique? I got that technique when I unlocked the Darkness Style due to 'Sin Seal'. 'Adamantine Chains' appears to be a variation of 'Corrosion Chain'. Are they somehow related?'

I carefully inspect the jutsu formula of 'Adamantine Chains' and it appears more and more similar to 'Corrosion Chains'.

'Is this a coincidence?'

After memorizing this hidden technique, I place the seal back in the glass panel. The panel closes on its own and seals the scroll again.

'So far, I haven't managed to find any clue regarding 'Sin Seal', but I had harvested plenty of powerful sealing Techniques to compensate for that.

Now, let's choose a suitable weapon. My previous weapons keep on degrading due to my potent chakra. I search among various weird weapons and finally select a blade and a scythe.'

I search around to look for any other useful things. I accidentally press a lever and trigger a mechanism. I infuse lightning chakra in my new blade and get ready to face the enemy.

In the center of the room, the spiral Uzumaki symbol opens up and a pedestal start to rise from the ground. There are various Adamantine chains wrapped around the pedestal.

The 'Sin Seal' on my hand starts to heat up. I feel a strong attraction towards the pedestal. The 'Grimoire of Sin' appears on its own. I catch the grimoire to inspect the abnormality.

The Grimoire struggles in my hand and shoots towards the pedestal. The pedestal starts to shake violently as if an uncaged monster is about to be unleashed in the world.

The Grimoire opens up and starts to suck the 'Adamantine Chains' wrapped around the pedestal. I try to pull the Grimoire to prevent it from eating the chains to no avail.

'What kind of thing is sealed beneath this pedestal? It must be something terrifying to be sealed in these many 'Adamantine Chains'. What kind of trouble have I invoked again?'

Help!...Someone. God help. One 'Sin seal' is enough to make my life miserable.'