[quote=Roran Hawkins]
Allright, I like your character, but I don't like that Kekkei Genkai. What you are doing is literally nigh impossible in the real world, and it is so extreme it'd probably be the same in the Naruto world. I'm no rocket scientist and even after browsing the internet to fill up my knowledge on the subject of turning heat, which is an energy, into matter, I can't tell jack shit about it.In any case, every situation where energy is turned into matter required extremely advanced equipment due to the extreme conditions required to form this. I don't think I can accept that kekkei genkai based on the fact that:A) I question the physical possiblity of converting heat into matter. B) I question the amounts of heat required to create a certain amount of matter.C) I find it too complicated.D) I find it overpowered. This is essentially Gaara's sand with the addition that here you can create it out of heat which is pretty much everywhere a human can survive, and it turns into heat again when it falls apart, allowing you to freely control said matter as 'sand' and then have it become the equivalent of a teleporting forge in which to bake your enemies while doing everything Gaara can do with his sand.Result: I would heavily modify and clarify said kekkei genkai in detail, or just discard the entire idea. I don't want to sound rude or harsh, but I can't accept that if I am ignorant about what it does/can do. Example: If I accepted this anyways and suddenly you, who knows more of it, starts I don't know, taking away all heat around a person and insta-freeze him, your character would be blatantly OP.
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Thanks! I'm on my phone and at work so it's pretty hard to formulate myself properly but whatever. First of all, it's not harsh at all. I'm thankful you took your time to analyze it. As for the physical properties, it's definitely not possible but chakra isn't the most realistic of resources, imo.

 I should have clarified better but in order to shape something the user needs a lot of heat; gathering heat simultaneously from a human's armpits, groin, palms and head is equal to a spear, while the user needs to be essentially engulfed in flames to create an armor. 

The releasement of heat upon breaking is my fault - I forgot to expand on that. 

Heat can only be transformed into hard items/objects and it's impossible to use it in the same way as Gaara would freely manipulate sand, but I see your point. I had no intention of making it complicated, the only use I thought of during development was for the user to be able to fashion weapons and armor and serve as a sort of resistance against fire, nothing more. I could clarify that in the text if you'd like. Of course, I'm also fine with trashing it. Thanks yet again!