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After the meeting, I followed Helios' advice and went to the camp borders. Sureeeee enough, there was a man there. He had wwweird spikey black hair white skin, black eyes, and an evil smirk. His clothes consisted of a long-sleeved black and gray martialarts gi with a red belt. He also had black pants and white boots. I walked up to the man and gained his attention.
"Excuse me sir. are you Goku Black? I am supposed to meet him because he wants to talk to me." I said.
"Why hello Perseus Jackson. Yes, I am Goku Black. Nice to meet you. Just call me Black. Now, let's talk." Black said.
Percy's POV
"So Black, exactly WHO are you?" I asked him.
Percy be careful around this man I can sense an insane amount of darkness radiating from him. Helios stated. I internally nodded at him.
"Already suspicious of me? Damn kid it must be hard to earn your trust. But then again you're not wrong to not trust me considering my past which you will find out later. And as for my identity you don't need to know that right now." Black said.
"So if we're not here to talk after all then what do you want with me?" I asked Black.
"Oh, that's simple I'm going to train you of course. According to the gods you're the strongest demigod there is, not counting Heracles of course. " Black said.
I didn't know how to respond to that so I just nodded my head. "So what will you be teaching me?"
Black smirked. "Alot of things. I'll be teaching you Kaioken, Spirit Bomb, Kamehameha, Black and Rose Kamehameha, energy blades, energy scythe, Instant Transmission, Super Saiyan, Super Saiyan 2, Super Saiyan 3, Super Saiyan 4, Super Saiyan God, Super Saiyan Blue, Super Saiyan Rose, Super Saiyan Blue Kaioken x10, and Super Saiyan Blue Kaioken x20. Ultra Instinct and Mastered Ultra Instinct you'll have to achieve on your own. But at the end of out training I'll give you some advice to help you unlock Ultra Instinct in the future. Oh and before the training is over, I'll be giving you immortality. But it's different than the immortality the gods have. You'll see what I mean later."
"That's alot of stuff to learn! It'll take months if not years!" I said.
"well good thing I have access to the hyperbolic time chamber them. There we can get all the training done in a few days. We can do that tomorrow though. for now get some rest. Be here at the crack of dawn." Black said then put two fingers on his forehead and vanished away.
I just nodded at his words and walked back into Camp Jupiter to get some rest for tomorrow knowing it'll be a long day.