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1. He couldn't be surprised if he saw it before hand.

That was the point. "War of attrition." He continued it until Yusuke delivered enough his aura to combat Cziri's soul-reaver. In fact, it would continue until both combatants were exhausted. However, Yusuke better get a-lot of his aura there fast, or the blade could simply cut through him. In fact, Yusuke even forgot the part in the original post saying something like this "a source of energy that can change form to fit its task flowed into the blade to refuel it, or something like that." That would mean Cziri probably had more soul reaver in one area than Yusuke's dispersal. And, I said the soul-reaver was eating/converting Yusuke's energy. Mmm, more for Cziri. Well, rather, the neutral energy created from the conflict.

2. I thought I said Cziri grabbed the hand. Just as you can grab Cziri, he can grab you. He simply put enough of his chaotic aura to disperse the energy, instead of using the negating example this time around.

((Ironically, that would give me infinite energy, too.))
((I'm going to admit I'm trying to end this as soon as possible. That stupid limit is forcing me to do this.))

1. If you read my post carefully, it stated that it was using destruction of both energies to create fresh energy for it to snack on. In this case, neutral energy. I'm only applying a minor law of conservation in this case. We wouldn't want someone somehow deleting the universe without conservation.

1. I said that my hand would grab the fist.

It's not quantum physics. It's simple, high-school physics. How about no, Yusuke isn't invincible, he's just some supernatural teenager. Even though supernatural denotes an ascension over the natural, some basic laws might be kept. I'm simply applying the law of conservation in a different way.

Uhm, chi is usually stopped from becoming excessively ridiculous, like with other supernatural energies by planting a signature on it. This aura isn't Cziri's, true chaos aura, it's simply his "chaotic chi" aura. Just as chi in myth could take paths such as fire, wind, water, light or earth, so could Cziri's energy. Just because the energy is yours or "demonic" makes it no better than Cziri's. Hell, didn't Hiei have "dark/fire" chi and Yukina "ice chi."

Your aura fails because it's taken from a TV show. For some reason, any character stolen from a creative work is usually ridiculously overpowered. Example, that Shadow the Hedgehog retard that was walking around. Hell, if I remember from Yu Yu Hakusho, there were a few characters that absorbed others' spirits or chi. Yusuke is no exception from that.

All energies are usually controlled by one's will. However, the control usually can be broken.