It's never stated to be advanced.
FS is not stated to be "advanced" either; yet it is superior to basic CoO. Are you acting dumb on purpose?
They all learn Ryou, because they are all swordsman.
That's what I have been saying so far.
What's next, fire is hot?
Barrier haki is much more versatile than basic CoA; you flow your Haki outside your body, ie. on weapons as well.
It is advanced, use your brain.
Luffy can't use it because he's a brawler and never needed to use it.
Why do you keep pulling out lame ass excuses outta your ass? Whether Luffy needed to use it or not doesn't matter you moron.
What matters is the fact what kind of abilities Luffy would get with Ryuo - and it is clearly an upgrade to his usual basic CoA.
Listen you dumbass, We've literally seen it been stated twice to be eqivalent to haki.
You are a special kind of idiot, did you ever read what I've been explaining so far?
Read again before you shat horseshit: No, it wasn't stated like that. Ryuo is what the swordsmen understand about Haki since they automatically use the advanced version for their swordsmanship.
They understand Haki as Ryuo based on their advanced skills with Flowing Haki. Oh my god, you are fucking stupid man. Stop it.
Are you now gonna claim it's special when it's not...
I have said "Ryuo is advanced Haki", not that it's special or rare smh...
Are you gonna claim Mantra is Adv CoO.
Perhaps it is? FS is not really the only Adv CoO application - it is highly likely that Fujitora's CoO is advanced too.