Comments of chapter undefined of Percy Jackson: The Akashic System

I am a bit confused. Is this a fanfic, as in is this new world an existing one? Because if not, why is this not an original story? Why is he Percy? Is he a good fighter? Yes, but that could have been an OC with good talent learn in this world. All that "darkness" origin story could just be an OC character that is more dark naturally. If he has no water powers (which I guess we will see but author knows), why Percy? Is he good in battle? Very, decisive, skilled. But outside of it? He sounds and acts like any kid his age, not wiser, not jaded, no plans, no ambitions. He reads like a Harry Potter type, just cruising through life, reacts only (doesn't help there was such a big time skip so readers can only take what we seen in recent chapters). He was reborn in world and just said: Guess I should get used to it, went native and other than bad memories the previous world has no impact. An average human at the age of 30-40 already could think enough of how he would change himself if he was young. It just seems like a lot of build up and little impact, like an origin story first chapter that can be safely ignored. More of a personal preference, I don't particularly like this MC. He seems too wishy washy, Harry Potter style. No questions, not curious, no plans, no ambitions. He seems competent as far as battle goes (not perfect but okay) but beyond that... in novels were an MC is reborn and goes to build business, reinvent things, build empires, what ever it is, that is unrealistic without a system or a lot of work but it's more of a dream and an idea of what you expect as an ideal. The MC has none of it. Will next chapters he will say: Let's do this, and that, and this. I have experience fighting monsters (wont tell them why), I know what we really need for a good future or will he be: Yes mom, we will do what you say, and just go a long following others. Percy was a leader, the flaw he had is that he was a war leader, with little ruling ability (or more that he just didnt think about it). Anyway, good story. Still not sure why its not just an original story.

i am so excited for more

I'm enjoying this work so far, I think it's really well written and I'm excited for the rest of this story! I do have a question though, are you going to include a preliminary chapter that involves the ranking systems, such as is 7th tier the best or is their better, or are you going to release the ranking systems throughout the story? And is their going to be an update schedule or will releases just be whenever they are finished? Your other works and this story so far is written really well so I'm excited to see how you will continue this story!

He still a demigod with all of his Poseidon powers?