A demon's guide

As he walked around the destroyed village, he summons a scroll from a tattoo on his wrist, and stored all the relevant scrolls, tools, weapons, and masks in it, then re-sealing them back to his wrist, wearing a black hakama, and a katana on his waist, he ventures toward the sister village of Uzushio, his steps as light as a feather as he runs on water, entering the land of Fire, not in a hurry, Ichigo ventures northwest, going from village to village, cities to cities, taking odd jobs as a mercenary.

Ten years have passed and here he is in front of the Konoha village's gate, after going through a bit of a detour, and ready to start his new life, just as he is about to take his first step towards the village, six men in animal masks surround him in an instant, each holding a kunai to his throat, their killing intent palpable, then an Oldman with a comically wide hat approach from the front. "Oy, Oy, is this how you treat your guests??" said Ichigo as he raised his hands, chains started slithering out his back burying underground ready to be unleashed whenever he wanted.

"Kuro-oni" said the Hokage as he raised the book in his hands reading the page about the man in front of him, "Affiliation: Unknown, Rank: SS, male, tanned, between 20 to 30 years of age, approximately seventy kilo, lean, blonde hair, blue eyes, wearing a black Hakama, and a sword strapped to his waist, yet has a large variety of poisons, venoms, and acid in person, possibly a ronin from the land of Iron, specific orders: Flee on Sight." he reads as he then lowers the book and looks at the man in front of him with a serious face, "Seeing as you have yet to target any Konoha Shinobi, I will be polite and ask what your reason for coming here is before I chase you away, Now tell me, why are you here, what's the purpose of your visit?" his face passive as he tries to read the man in front of him, "Uhh, I'm here to retire actually, after all these years of hard work, I've just decided to open my own little store here, seeing as this is a sister village of my own home," he said trying yo defuse the situation, then as the hokage was about to say something another Anbu appears out of nowhere and throws a barrage of shuriken, kunai at the assailant, Ichigo trying to protect himself summons his chains from underground binding every single Shinobi in the area, including the Hokage, some shunshinned out, others used Kawarimi, but in the end all of them was stranded in mid air as a huge sealing array light up from the ground, frozing all of them in suspended animation, every one of them locked in space as fear took over, some trying and failing to summon their Chakra, others just closes their eyes accepting their fate, Ichigo seeing them like this chuckled and explained to the Hokage that he is an Uzumaki, and that he was serious when he said that he was gonna retire from the life full of bloodshed.

Weeks passed, and Ichigo successfully persuaded the old leader to let him in Konoha, the Anbu that attacked him was confirmed to be a spy from another village whose brother was killed by the infamous 'Kuro-oni'.

For the first few weeks, he was busy with his shop's renovations, settling in, and discussing licenses with the merchant guilds, after another few weeks of preparation, Ichigo walked around on the outskirts of the village, tracing the memory where the Uzumaki temple was from the short recollection he has in the past, seeing the Temple in such sorry state, he started by taking the debris out, and placing the trash in one place, the next day, he bought a few tools from his home and start fixing the temple and realigning the broken seals, and adding more for its protection as he fix the temple.

"How's the target?" asked the old leader as he puffs on his pipe, taking in the mind-numbing smell it brings as he asked about the person of interest who just joined their village, "He has finished with his shop's renovations, and is now fixing the old Uzumaki shrine," hearing the Anbu answer back, he took another puff, while watching said man hammering away, as he fixes the shrine, "I want constant eyes on him," he paused as he puffs another in while he eyes the fake scroll he found in his office," And remember..... he has a flee on sight order for a reason." said the old leader as he leans back to his chair as he massages his temple,

In another part of the village, a seemingly injured man, with his eyes and arms covered in bandage listens in on the conversation within the Hokage's office, the old man is not happy, not in the slightest, every assassin he has sent to dispose of the blonde menace silently has been sent to the Hokage's office and the old leader has been limiting his movements since it's happened, with no other moves left, he decided to watch and wait, to wait for the perfect opportunity to use his hidden eye on the menace that's been ruining his life.