Akimoto-Kenta
F*ck Yeah! Seaking!
Now you show it to me, I'm doubtful. It's true, Sylveon looks like to charge on the opponent... But the attack looks to be a composition of a Physical and a Special attack. That's weird. Maybe Sylveon created the ball, then launches it after, when the animation turns back to Haryiama..
Sylveon is the ball.
much like how you see a blue ball when a pokemon uses Fly.
You can see that Sylveon charges (ignore how she moves, cause that animation is probably used for all moves) then you see her feet disappear only leaving the ball, and then ramming Haryiama full throttle.
Also notice how the background slightly turns red, much like how the screen turns red with Double-Edge.