A demon's guide

A year later, Ichigo has been living his best life, with no bloodshed, no more crazy weird robotic people trying to kill him, he's just been living in peace, opening his small drug store, now people might think that opening such a store doesn't earn him enough profit yet on the contrary, simple herbal concoctions like a healing ointment and cough syrups, though most of his earning comes from his backdoor deals, after being tailed for half a year, Ichigo hot the bright idea to sell toxins and venoms to shinobis, his first customer is his handler, he calls him tonkatsu since the guy has a pig mask and has a huge build, at first the agent was skeptical about the poison he gave him, but after the guy returned from his mission he has been a regular at his shop mostly buying his regenerative salve but would always stock up on paralytic venom.

As the sunrise the bell to his shop rings, Ichigo not turning his head as he keeps reading a book with Icha-Icha written on the cover: "I require some nightmares." said the man with what seems like a dog or a bear mask, his gravity-defying white hair stand tall as he drops a sack of coins on the counter. Ichigo took the pouch, check the inside then ushered the man to follow him to the back of the shop, there he sat at another counter as he handed the man a menu to choose from.

His smile radiating from the prospect of earning another buck from these fools, Kakashi remembering his literature from before regarded the man as a true comrade and did not mind his irritating smile as he checked the boxes on the menu indicating the type of concoctions he required and how much, "These and these, and can you please heighten the doze on the paralysis powder? I might need a more lethal dose on my next mission,"

"No problem, come back in five days and they'll be prepared nicely, do you need a scroll with that or are you just gonna carry it as is?" asked Ichigo as he placed the menu to the side and started writing down what he needs on a notepad.

"Scrolls?? Do you also sell sealing scrolls?" asked Inu as he eyed the man in front of him.

"Yup, sealing scrolls, prisoner scrolls, ceremonial burial scrolls, I have a lot, just tell me what type of sealing scrolls you need and I'll prepare it for you," he said as his mind started formulating the the ingredients he needed to make the orders.

Inu hearing this slowly placed his hand on the handle of the tanto on his back, "I have a permit from the Hokage." Ichigo said as he took out a scroll with the kanji of fire written on its surface and handed it to the man in front of him, Inu seeing the scroll opened it and started checking if it was real, noticing no forgeries were made, his shoulders slacken, his stance softens and apologized for his earlier discretion.

Ichigo after sending the man away summons a shadow clone, and sent him to the basement to start the production of the ordered products, while he summoned another one to make a few more to make basic sealing scrolls, after finishing delegating production jobs, he closed the shop for a short break then went to his favorite ramen place, after eating his fill he found a few drunkards screaming obscenities while smashing bottles at a young blonde kid, letting his instincts guide him he shields the kid from the thrown bottle, released a bit of killing intent scaring the men away and carried the battered kid to the hospital.

After leaving the kid there Ichigo returned home, he went to his room, opened a cabinet, and took out the scroll he copied from the one time he sneaked into the Hokage's office, the Forbidden scroll full of wonderful yet very dangerous Jutsu, though one jutsu, in particular, has piqued his interest, the reaper death seal, the one jutsu that summons a reaper in exchange for the summoner's soul, seeing this seal evoked a memory in his mind, the memory of studying about the seal, it's a two-man seal, one person seals the target in exchange of his soul being sucked into the seal, another uses the reaper mask to summon the user of the dead demon summoning seal back into his body and exchange the soul of the user with chakra or nature chakra as the binding agent, in theory, that is, no one has succeeded in resummoning a soul from what he can remember.

A few days passed and he had nothing else to do, the orders were all done and waiting for pick up, storage scrolls were stocked up, and he had no customers for almost three days now, all the orders were made and waiting for pick up.

Arriving at the hospital, he was about to ask a nurse about the boy he had brought there when he overheard another nurse talk about tossing a monster out of the hospital, he went to the front desk and asked about the boy he had brought three night ago, the nurse then checked their records and saw no patient arriving at the date as mentioned earlier, hearing this made Ichigo connect the dot as he rush out of the place, and try to scour where the boy might be, after a few hours of running around, he's both tired and impressed, tired from worry and impressed by how a child so young can cover their tracks so effectively, Ichigo then slows down his pace as he focuses on his senses, chains of all shapes and sizes surrounds him, this is a technique derived from reiraku, only in this world it doesn't follow just the soul, but the entire chakra signature of a person, as he sifts through the chains, he found what he's looking for and starts following.