Issei was standing infornt the gate of konoha with naruto waiting for pervy sage.
"Ahhh where is he is 6 in the morning". Said naruto scratching his eyes.
"He will be here be patient naruto".
"Yo kids keep you waiting huh". Said jiraya who have a green frog on his shoulder.
"Where were you pervy sage I almost fall asleep again". Said naruto have a vein on top his head.
"Sorry about that I was taking so stuff and a here I present you Fukasaku my mentor".

"Thay frog was your mentor". Said naruto with slight disbelief.
"Hey have some respect kid he teach me many things".
"It's alright jerya boy he will learn and hello kid glad to see you again". Said the frog greeting issei.
"Yes it been a while hoping you and your wife in good health".
"We are we thank you that day and I was happy to know you want to learn sage mode".
"No it my honour to be taught by great one like you". Said issei with at most respect make the frog smile this kid was good with his mouth he give him that.
"So when are we leaving".
"Right now just put your hand on my back". Said the frog all do what he say and then.
"Reverse summoning". In a flash the where transport to mount meyoboku.

"WOW look great". Said issei looking by his eyes many frogs some sitting and some sleeping under the shade.
"Well let's go you have to put your language". Said the frog who was jumping and they followed him until there where infornt of large place.

"It's that your house gramps".
"Well kinda there other live here also".
"So pervy sage you traind here also".
"Yes I was like 12 13 ich here I got here by mistake".
"How"? Ask naruto nowing he will laugh at it.
"Your remember the scroll you need to write your name and put your hand print on it".
"Yes".
"Well I kinda the summoning without doing that and get reversed on me being summon here".
"Hahaha hahaha ohhh I can believe it hahaha". Naruto was on the ground laughing holding his stomach issei have slight laugh he remembered that episode but it give him the props to learn.
"Okay you can laugh later on my mistake later".
"Well now sense we here let's begin our training".
"Right". Said the two they where infront of fouten with oil drip from a statue of a frog.
"Its been a while naruto". Naruto look at the side he find a big orange frog it him a while then yes he remembered.
"Gamakitchi that you man you grown up".
"What do you think I will that same little frog".

"No it just good to see you".
"And who your friend I know master jiraya but who the new kid".
"He is issei my new friend he come here to learn sage mode".
"Ohhh if thay the case welcome".
"Nice to meet you too". Said issei with a smile.

"Well then boys let's begin". After that the frog tell them how the training begin and how it can be a life treating because they may stop becoming human and the frog demonstrated by put a little drop on naruto arm and make circle at it at then naruto see his reflection his left eye become frog and his hand become to frog shift be run left and right saying help the frog hit him on the head tell him he will revert back sense he didn't have little to nothing on him issei who see this he remembered this training need patience and resilience the frog explain that they need to focus there energy and they need to be still for nature energy to flow in them and mix naruto didn't understand at first issei see this sighed and tell him.

"Think as them a ice cream with chocolate and vanilla but you added a layer of strawberry on top of it". Naruto now understand it.
"So how will be able to do it". Said naruto waiting for the frog answer. Gamakitchi interjected.
"You die for it".
"Huh".
"He mean for you to do it , it will take time and patience because it maybe the death of you sage mode isn't a game but when you master it you will life a thousand times your body can handle naruto wad gouspump he think sage mode can do all of this the frog see his face he reach near frog statue and became to lift it and voila he handle like a champ naruto was now more determined to do it issei who looked at frog oil remembered if it left it will disappear but it didn't stop him.

Both now was sitting near the fountain and the frog became to pour the oil on them naruto was been hit by a fan in face multiple times and issei well he was concentrate he kept his cool he regulated the energy but it did what happened to naruto he get hit on the forhead.
"Ouch".
"Keep trying your doing good".
"Alright".
Issei kept in this he then felt different he's body become more stable more powerful more feeling his surroundings his eyes lash become to change to orange but it cut short.
"Well boy you surprise me your the first who is near it naruto are too but now let's rest now and come eat issei just nod and both was sitting on the floor there was a food that they watching naruto almost want to vomit issei just normal isn't not the first time for him.

Naruto watching pervy sage eating it like it's nothing he turn his face and see issei eating as well he seems to enjoy it.
"Common boy thr food will be cold if you don't start eating it". Said shima

Naruto who didn't have a choice did it after that they finished naruto was like his face features said he was in 7 circles of hell.
"Common naruto it wasn't that bad".
"Easy for you to say you like it".
"Well it wasn't the first time". Said issei with downcast expression.
"Sorry".
"Don't worry believe me you didn't eaten snakes they where bitter but over time you get used to it".
"Seems harsh". Naruto give him his sympathy.
"Well let's continue". Now they where infront of a place there needle at size on building.
"So what are we gonna do here".
"Traning with your balance in some circumstances you need at most sturdiness in any battle you can't move while use sage mode so you need to calm your self". Then the frog a take a board and sit in top the needle issei who jumped also the frog throw him a one and he sat on it naruto did the same at first then he fall and gramp caught him by his tongue.

"Are you alright naruto".
"Ahhh yes damn this thing".
After that naruto tried to do this and fall over and over and over then he get it right issei who was calm didn't fall he kept his cool he felt the energy comes to him like before but now is more potent both sitting even after a thunderstorm comes with a powerful rain they didn't budge after that both eyes lash become to change to orange they opend there eyes at the same time.

"Those two are surprisingly good at it this can change many things". Said the toad .
"Your right how did you find both of them". Said jiraya proud for both.
"Naruto boy is good hard to each but not impossible but for issei boy is a different thing".
"What do you mean".
"His chakra isn't you called normal his chakra is so dark and bright and the same time".
"So your saying there something more for him".
"I don't know his nature is complex never in my years have seen something like him he is a puzzle piece and sometimes I see something behind him".
"Like what".
"Don't know really I never something before but it was a being with wings and a tail and huge mouth with fangs and red eyes like slits".
"Do you think it's a tail beast".
"No I have seen share of them no one like him this boy is rare his control of chakra is amazing to his age you also said he have the rinnegan that gave him a place near him".
"You don't mean". Said jiraya with gasp.
"Yes the sage of six path with this almost control aura he maybe his rightfull successor this boy isn't normal jerya boy I almost feel he is league above all of us".
"Is that all your feelings or what you think".
"Who knows really but it seems the fate of ninja world change".
"Wait how did it change".
"Something or someone have changed something that make everything go full 180 jerya boy this kid maybe is the cause who knows but it maybe something will be beneficial".
"Only time will tell".

Both issei and naruto was fighting each other no one pulling a punch Well except issei he didn't want to hurt naruto so he fight him with a power above him a little but it's good for him to learn also after that they both jumped on the oil of frog and balanced there chakra more with nature energy they where like reborn they overcomes there limits.
"Congrats partner how do you feel" said kurama proud of his host.
"Better then ever sage mode is something amazing now I have absolute control".
"Don't get head of yourself partner you need to know activate it need time and you need relax yourself it been 6 days but you got what you want there still pain problems".
"Your right I must not get over myself thank you kurama thank you all". Said issei with a smirk and his friends smirk also.