As Bakorio approached Kakashi's house with him, he sensed the presence of his summon Pakkun as well as that of two other beings he didn't recognize.

'These two are no less strong than Gamabunta and Manda, and they seem to be hiding their aura' thought Bakorio as he approached the house…

Meanwhile, inside the house, two dogs were sitting on the floor silently with their noses twitching slightly as they sensed Bakorio's arrival.

They both seemed like dogs of Samoyed breed, they were very beautiful, although one of them had snow-white unblemished fur while the other had pitch-black fur and a scar on his right eye…

Something to note was that they both had weird red markings on their noses and ears as well as on the contours of their eyes, but other than that, they seemed like completely normal dogs…

"The kid with that brat Kakashi is dangerous" said the black dog with a manly voice and a sharp look in his eyes while the white one had a gentle look as she replied with a feminine voice "Indeed, he also has a weird aura around him, it smells like death"

The black dog nodded in response and before long, Bakorio who was having a talk with Kakashi about his body's transformation and his plans for Guy and Mukai suddenly came into their view and they both stood up at the same time…

"Oh, I wasn't expecting to see such beautiful beings" said Bakorio with a surprised look on his face, he liked dogs in his past life, and these two just so happen to be from the same breed he used to like…

"These are the two elder sages, Kuroinu and Shiroinu" Said Pakkun introducing the two of them to Bakorio "Nice to meet you both" said Bakorio with a smile while staring at the two of them curiously…

"So, you are the brat that dared to threaten Pakkun's life, you don't look the way he described" said Kuroinu with a threatening voice while Shiroinu only stared at Bakorio serenely…

"Oh, that was just a small misunderstanding, we are good buddies now, right Pakkun?" said Bakorio with a smile and Pakkun instantly retorted and said "who's your buddy?"

"See, all is good between us" said Bakorio, and they couldn't help but stare at him awkwardly before Shiroinu decided to change the subject and said "We decided to accept teaching you our sage arts along with this man Kakashi Hatake after seeing that he's talented enough and have enough fate with us, but you will have to agree to a request we have"

'Oh, they actually plan to allow Kakashi to train sage arts as well… was it's probably his personal request' thought Bakorio before he shot Kakashi a look and the latter nodded at him to answer his doubt…

'Now that I think about it, with Minato learning sage arts from Jiraiya, one of his students would have probably received his teaching as well if they had the talent for it, and Kakashi's is probably the best candidate for that, although his untimely death ruined many of such developments…' Thought Bakorio before he turned his attention to these two dogs and asked "What do you want In exchange?"

"We want you to help us deal with some monsters and beasts that are escaping from the gate of hell" said Shiroinu and Bakorio couldn't help but ask "Can you first explain to me more about this gate of hell and hell in general since I'm a little bit clueless about the subject?"

Kuroinu and Shiroinu shared a look before the former said "It's a long story, one that extends far before the humans of this world could use chakra. In that era filled with wars, those who desired power, both from humans and beasts alike all searched for the entrance of hell since it was said that anyone who could endure its aura would be granted immense strength… However, those who fails would be corroded by its power and turn into monsters with no sanity that only wants to bring disaster to this world if they are left free

So, our sage clan took it as our duty to protect the world from those monsters we call devils and we have been guarding that gate ever since"

"I see…" Muttered Bakorio before Kakashi asked curiously "But how come you still have problems with these 'devils' if you are guarding the gate?"

Kuroinu stared at Kakashi before he said "There are 7 gates of hell in total, all 7 of them allows people to enter hell, but only one of them allows those monsters to leave which is the gate we are guarding and many humans and beasts end up entering them out of curiosity or from the temptation of its aura"

"Can't you just guard all the gates and solve this problem?" Asked Bakorio but this time it was Shiroinu who responded and said with a sigh "If it was that easy, our clan wouldn't be that troubled…"

"What's the problem?" Asked Kakashi and she responded with a gentle voice "Only the gate that we are guarding is stationary, the other 6 keep appearing and disappearing in random intervals and places making it impossible to predict or guard their location long term, although we grew accustomed to their aura and we try to find them as soon as they appear, but there are always beings that fall for the temptation of that aura…"

"That's indeed troublesome" said Bakorio before he asked "How strong are these devils?"

"It depends on the user's talent before they enter the gate, the more talented they were the stronger they become as devils… finding devils at the Kage level isn't that rare"

Bakorio's eyes narrowed slightly 'This place is actually so dangerous? It seems that these dogs have been protecting the world for a long time in the dark from some terrible monsters… But why are they doing such a thing?'

Bakorio didn't want to keep contemplating this question so he directly asked "Why did your clan decide to protect the gate in the first place?"

The faces of both Kuroinu and Shiroinu froze slightly after hearing this question and they seemed reluctant to respond as they only replied "Our clan never breaks their promises"

'It seems like someone ordered them or their ancestors to guard the gate, interesting… Who could it be? At that time, no human had chakra…' Bakorio was truly curious, but he could feel that the two dogs in front of him wouldn't tell him the truth even if he pressed them on it just like Pakkun so he changed the subject and said "Do you guys have any trials?"

"Yes, you will have to pass the trial of deprivation where you will lose all of your senses for a set period of time, and you will need to fight some enemies at the same time" replied Kuroinu and Bakorio noticed that Kakashi didn't say anything and understood that he already knew about this…

"That's quite hard, how do you usually pass this test?" Asked Bakorio curiously and Kuroinu replied "You will have to unlock your survival instincts, that's the only way you have to face your attackers while deprived of all your senses"

"Okay, let's do it" said Bakorio surprising Kakashi who said "Don't you need to prepare yourself?"

"Nah, this is going to be a walk in the park" replied Bakorio confidently… If there's one thing he was proud of, it was his terrifying instincts, not to mention they were greatly enhanced after all the time he spent fighting inside the eternal chamber!

"You will first have to help us with the devils, it took us a month to weaken their assault, but they are still coming out in droves" said Shiroinu, and Bakorio nodded at her calmly before he turned to Kakashi and asked "Are you coming?"

Kakashi let out a helpless sigh before Pakkun glared at him and said "What are you sighing for, you already expected this and told Rin to delay your training sessions"

"Oh" Bakorio exclaimed in surprise as Kakashi smiled awkwardly while rubbing his head and said "Let's go"