I'm starting to think that "Internal Destruction CoA" doesn't exist and Luffy was doing Ryou all along. The reason why Hyo couldn't do "Level 3" was because it included CoC.
Luffy wanted to learn the "advanced" thing that Rayleigh was doing, which was "flowing" (Ryou means flow), and that's what Hyogoro was talking about. The "one level" above was to flow.
The right panel seems like Ryou because it has some invisible layer, but Luffy had that with basic armament too.

Luffy wanted to learn the "advanced" thing that Rayleigh was doing, which was "flowing" (Ryou means flow), and that's what Hyogoro was talking about. The "one level" above was to flow.

The right panel seems like Ryou because it has some invisible layer, but Luffy had that with basic armament too.
