Ah, you've reached Monsoon. He's pretty much the final exam in parrying. If you can keep up with him, you're good for all your parrying needs for the rest of the game.
By the way, have you noticed that you can control both camera angle and cutting angle while in Blade Mode yet? You may want to aim the apex of the cut somewhere else than straight ahead for hitting difficult targets. And click the left stick while in Blade Mode. You can walk, like Raiden does in the gif in the OP, as long as you hold that down.
I had some difficulties with his subsequent attacks. I was able to parry the first blows, but I've always screwed up the penultimate or last hits.
I know that I can control both camera angles, but moving around while in Blade Mode? :O Whaaaaat? I'll have to try that tomorrow.