I honestly would find it super hot if King Arthur and King Arturia got together in a romantic relationship. Also, have a feeling Arthur willregain his kings disposition in time or suring the one piece world later gaining haoshoku. Plz have him fught and scrape forall the power he can possibly get his hands on. Effort and time are key, dont time skip too often into a power up, doesnt read well of there is never a struggle. Of course you could do semi op or op like the general fanfics such as you bleach one, but this has a more serious feel. I want the hype , i want to feel the strugggle, the fear and anxiety as to whether he will triumph. Im curoius if you can accomplish it. Im looking forward to the future.
Again, Arthur and Arturia baby!