Fallen_Crown
rokushiki techniques that can be learned by seeing them or knowing the principle, would be the one that makes you fly, the one that gives you great movement speed, the finger gun, the sword leg attack, and possibly iron skin ?, although the latter could use kami-e principles, or not. You can learn armor haki by hitting a mountain or a large rock repeatedly, your hands bleed from hitting so much, your zoan will help you heal by drinking milk, and keep doing it every day, with the thought of haki and a strong He will not hesitate, and instinctively his armor haki will come out, like in the movie with Hancock, once he has armor haki, keep training him until he can cover his entire body, and then he can go to the observation haki, tie trees to getting hit while blindfolded, but uses haki on his body so he doesn't get hurt. once I had these two, I could try to flow the armor haki to achieve the ryo or its advanced phase. his king's haki could awaken him in a battle with another conqueror. Also in the future he could try to learn the technique of don shingao, the dragon technique used by his father and the gyoyin karata, and create a powerful martial style combining it with rokushiki. It would be great if you make Robin stronger, not only for fleeing, but also training to take revenge on the government, this Robin would be more vengeful, Nami the same, training so that at some point he can defeat Arlong, although Luffy or Garp will probably defeat him? please make sure shanks hasn't lost his arm, even oda said it was a mistake, and make sure crocodile has haki, after all she is a warlord. otherwise, a pirate with haki comes and dethrones him from his position easily,