When it comes to being a shinobi there is a few obvious rules in place that even academy students understand . Some of the rules include drinking during a mission, bring perishable food to long term mission and the one he have broken.

'When you see an ominous looking scroll do not poke it with your porn book' 

Kakashi do not remember the exact wording of that rule but he was pretty sure it's around the same line. But he was pretty sure that in that list of rules there were a little note saying Kage level shinobi are exempt from the rule. The reason for that addition was from the sannin who keep breaking the rules since their academy day and during the second shinobi war the Hokage in his infinite wisdom and understanding of his student added that extra note.

But really Kakashi should have known better. 

It was a small mission that his cute student Naruto assigned to him . A simple B-rank mission checking out the disturbance near Konoha's wall, because of the world being at a time of peace (something Kakashi haven't felt in a long time). While scouting around the wall he notice a light coming from the ground. He would like to say that he approach the glowing box he dug up with great caution but that would be a lie. 

The main reason is the logo on the scroll, it was the Hatake crest something he haven't seen since he last step foot in his family's compound many years ago. His father has told him of one of his uncle when he was younger and just about starting the academy. His great Uncle was said to be a master of seals who has passed from an assassination attempt from his brother the motive was unknown. It was said that the brothers often worked together to create a better living situation in the young Konoha. 

Based on what his father said the Uncle created something extraordinary that was said if it was ever released to the world it would cause even their allies to go against them which mean that whatever his uncle made must be overpowered in some way. 

For a shinobi when creating such a weapon the first thing that comes to mind is the village even Minato-sensei thought about the advancement of Konoha when making the famous flying thunder god. But his Uncle was different . It was clear that his Uncle had a mentality different from the rest of Konoha especially when he announced to the whole village that he got rid of weapon. 

And the rest is history perhaps if his Uncle kept his mouth shut then he would have been able to add an extra ten years in his life. 

But here it is. It no longer became a Konoha problem but now the scroll became a Clan problem something that hadn't happen since his father's death and Kakashi being the sole member of the Hatake clan.

At the point Kakashi can only stare at the scroll on the floor. What is he suppose to do. By Clan law the scroll is officially his and the mission is canceled. He no longer have to present the thing to the Hokage, it could be his to keep.  

Perhaps it was from the emotions he was feeling or maybe it was the power of the scroll but Kakashi felt the urge to open it, to see what his great Uncle has written inside that made him hide it away from the world. 

The next thing he realize is that the trees are taller.

---

He once had a chat with Naruto. It was one of thoes days. The day the rusty kunai is filled with shinobi from different ages where they speak of love and regret. He was with two of his students. Sasuke on a mission somewhere in Ame with Sai (his half-student). 

"No one really know the limits of sealing." Naruto spoke out of the blues. It was common for the blond to bring out a random topic during their meetings. He did not like beating around the bush, he was always straight forward with his talks and likes to get rid of whatever he held in his chest as quick as possible otherwise Naruto claims he won't be able to work properly . A trait that can be seen as a weakness but also as a strength.

"I mean with the power of sealing we are able to control tailed beast, disobey rules of nature  and create new rules centering on what we like."

Kakashi nods along to what Shikamaru like to call 'Naruto wisdom hour' normally it was the Nara who receive the other end of the talk but today it seem that Naruto prefer his company instead.

"So one day I just thought what if we can go back in time."

Kakashi froze from where he sat. It was a common thought to many people especially after war.  Hell, even he thought of it after Obito died. If Naruto really did made a seal for the purpose of going  back in time  then-

---

Naruto never even started on the project. The next day he just chuckle at his half drunk self and went on with his day. He never spoke of it again.

Kakashi looked around. There were more trees than before. Some even looking younger.

Was this a genjitsu?

"Kai."

...
...
...

He could have sworn he had more chakra.

Kakashi look down at the now opened scroll in his hand after reading the content in the scroll he let out a loud curse for no one but the birds to hear.

He took a deep breath. ANBU rule number 204. 'When things go to shit, good luck.'

Although now he disregards rules, Kakashi always found comfort in this particular one. Genma made it which make the wording a lot more sense. 

It was after he and many other left that they made a 'helpful guide to be a successful assassin ' to the newbies taking their place.

With a heavy sigh, Kakashi turned around. If everything the scroll said was true then he have a lot of work to do.

--

To the Hatake who found this scroll.

It has been long since my passing. I wonder how my family has fare. Have we achieve greatness or have we fallen to where we may never come back.

For the scroll to have come back to life means that someone in my kin has found it. The scroll is not a curse but instead a blessing in disguise. I am certain that you are in a time period where you feel great regret but beware for you are here and you are there. Beware of your past self and beware of those around. For it was others that I hid the scroll. Tred carefully for you are in the past.