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Uh-oh, another problem for you, like last month, I stumbled across some illegible names for Pokemon battling Pikachu, which doesn't appear to resemble any of the Japanese names of any of the 720 other Pokemon. Could it be possible for Omega Ruby/Alpha Sapphire to be a Generation VII game? It's highly unlikely for NPC trainers to have nicknamed Pokemon.
This thread is basically a duplicate of the one you made previously, except with different reasoning. It was closed for a reason - you have no actual evidence that ORAS is a generation VII game. The "unknown" pokemon you're talking about is a Zigzagoon, easily seen by the name. You can discuss Pikachu's costume moves in the respective thread, but otherwise, let's not spread rumors with no backbone.