User blog comment:Guyfarting/Razors Nen/@comment-4896558-20130916161736/@comment-5888163-20130916222635

The reason Genthru's ability explode is because he conjures a bomb seen in his main ability Countdown and i also believe he makes small bomb-like with his aura since you can change your nen aura's property into something else. I'm not a bomb expert so i don't know what property would Genthru's change his aura into to make them explode.

Secondly emission only allows you to release, extend or have your aura exist for a long period of time even without being connected to you. To change the property of your aura you will need to be a good Transmuter. The reason Tocina needs those balloones is that is where he placed his nen so that his opponents will not notice that it is indeed made out of nen. The reason he can't make his aura becomes more like an actual person without the balloons or some sort of clothing is because you will need to be a good conjurer/transmuter for that. Since his an emitter he can only be effiecient and materializing at 40%. Besides his not highly skilled compared to other hunters.