I don't know if anyone already made a blog similar to mine but there's a great chance so i would like to clear it to you all that i didn't copy this BLOG up..
i think i know where oda get the idea of haki from...
have you ever watched star wars?? i was just watching the whole series today because i kinda missed star wars and i forgot some of the storyline of it.. then something came up to me and that was the similarity between the haki in OP and the force in Star Wars it's very similar that you can't tell the difference i think it's ONE AND THE SAME..look kenbunshoku/mantra -when someone dies their prescence were detected by the user of the force/haki
busoshoku- the invisible force that can be either weild as a shield or a penetrating force
and even haoskoku controlling the weak minds and gaining anvantage of them
remember when obi wan influence one of the rebel guards not to captured them..