"Hmm, how would you like to join my organization".
"See the world is much bigger than you think, why stay, and limit yourself to this world when you could have the ability to travel through dimensions and see different worlds," the man said.
Izuna fell into thought, he was currently lost, he didn't know what to do at the moment because he had lost his purpose. Currently, he had nothing to lose.
"I can also help you to get power, currently you haven't even scratched the surface of your true potential, even with those eyes of yours, you are nothing in my eyes," he said in a deep and lazy voice. "I can teach you the true power of those eyes you possess".
"Hmm, and what is the purpose of your organization".
"My purpose you say, well, you could say that my purpose is essentially to save this world".
Izuna had already made the deduction that the man in front of him wasn't from this world but from space, and he also deduced that there are also others potentially stronger than he was.
"Last question, how strong is this world, compared to other worlds".
"Interesting question, power-wise, compared to the different worlds I've been to, this world is below average, does that answer your question".
Izuna nodded and began to think 'if what this man is saying, is true, then it is pointless to stay in this world, besides this man said he would teach me, this would give me a new purpose, to get stronger and roam the different worlds, also I don't sense any hostility in his words".
After a while "I agree to your offer".
The man nodded, "from today on, you are the first member of, Kara". He didn't say anything else and lifted his hand, but then a black and dark red swirl appeared. The man then the man told me to follow as he entered the swirl and his body disappeared.
Looking behind the swirl, I didn't see him come out the other end which surprised me, but then I remembered that he wasn't of this world. I tested it out with my arm and surprisingly my arm came back out. So after I thought it was safe I entered after him.
As I walked through, I instantly fell to the floor. I couldn't stand up, my mind was spinning so much that it felt like I had just been tied to a tree and thrown into a huge tornado. I knelt on one knee as I waited for my head to stop spinning.
After a while, I lifted my head and looked around, and saw the monk looking at me.
"That's just the after-effects of using space-time ninjutsu," he said while secretly being impressed by how I handled it, most people would be on the floor puking their guts out.
I looked at where we were, and I realized that we were in an entirely different place, it was a big open stone room made out of old stone blocks. There was a round table in the middle with four doors, one on each wall.
The person went to the nearest door and I followed him, it lead down a stone corridor and finally to a door. When I entered I saw that it was filled with bookshelves and all sorts of books in them. The monk snapped his finger and all the books changed.
"These books will enhance your knowledge, they will also help you understand your powers and help you improve them further, I won't personally teach you yet, but once you have read and memorized all the contents of these books then I'll start your training," he said, as he stretched his hand out to my head, "first I need to get rid of this pathetic memory seal"
I didn't move but allowed him to remove the seal, I didn't feel much different after, but it did feel like there was less strain on my head. Then I realized that I didn't even know the man's name.
"How should I call you," I asked.
"My name is Jigen Otsutsuki" he replied in his tired tone. "I will leave now, I have important matters to attend to" and with that, he shut the door and walked back.
Slowly turning my gaze toward the mountain of books "Hmm this might take a while even with the Sharingan, well better start now".
There were all sorts of books ranging from, all types of Jutsu, special and rare Kekkei Genkai, all the way to all the types of dojutsu Kekkei Genkai. There were even books about kekkei Mora and Kekkei Tota, these were things he had never heard before.
All this knowledge would greatly help him out with his training, as he didn't know too much about the Sharingan before and he didn't know where the powers originated from, but it was all written in these books. He also read about something he had never heard of before, it was called the Rinne-Sharingan.
*In a different dimension*
Jigen was currently standing in front of his pet ten tails. "This weak body isn't able to contain my powers, I need to find a suitable vessel to restore my powers, it's a shame I can't embed my Kāma into him because of his Ōtsutsuki blood, but he will become a valuable and trustworthy member to my plans".
He was currently weakened and in an injured state, so he had to rely on the chakra from the ten-tailed beast that was caged in his dimension. It would probably take him around fifty more years to be in a stable condition.
He hadn't planned to start Kara yet but since he had found Izuna who could be a trustworthy companion he decided to invite him. He didn't want to start his plans straightway though.
First, he needs to train Izuna to be a top shinobi capable of taking care of himself, then he would send him out to gather information about the nine-tailed beasts that were roaming the earth.
He planned to either take the ten tails and use it to slowly get his strength back, or he needed to find a capable human vessel, that's able to withstand his power and take over their body.
He needed to do this quickly because certain circumstances didn't allow him to take his time. He couldn't reveal everything to Izuna at the moment as there was too much to know and understand and currently, Izuna wouldn't be able to understand.