As most everyone already knows by now, in Street Fighter V Akuma cannot do a forward jumping air fireball unless he is in V-Trigger mode. This helps prevent his ability to set up a vortex for the entirety of a game.
This obviously will not prevent him from setting up a vortex in V-Trigger mode, as people are now discovering cross-up air fireball setups in Street Fighter V. These setups work on normal, backrolled, and no recovery from your opponent as well, so you can you can still be a demon to your opponent no matter how they land.
Source: Some Fresh Guys
