Board Thread:Off Topic/@comment-27082610-20170729051211/@comment-26397825-20170813124158

Well, a thermal burn (burn caused by touching heated objects) is only caused by objects that are 44C and above, which from what I see averages about 6 hours of contact for the burn to properly form. However, for every degree about 44C, the rate of burning is increased by a factor of four, dropping it from 6 hours to 60 seconds at 51C. At 70C a first degree burn is caused in less than a second of contact.

At 60C, hot water can cause a third degree burn with 60 seconds of contact to the skin. Using the above logic of time reducing by a factor of 4 for every second, at 70C a third degree burn would form in about 1.5 seconds.

First-degree burns affect only the outer layer of the skin. They cause pain, redness, and swelling.

Second-degree burns affect both the outer and underlying layer of skin. They cause pain, redness, swelling, and blistering. They are also called partial thickness burns.

Third-degree burns affect the deep layers of skin. They are also called full thickness burns. They cause white or blackened, burned skin. The skin may be numb.

I think 70 is probably the highest you should go. It gives you a good temperature for dealing with Grimm, and would be painful enough to cause problems for anyone you are fighting, but due to the speed at which a sword is swung at someone and the blade passes through the skin, it's not going to be melting skin from bones any time soon. Aura would protect the average criminal or person they fight as well so it's not an instant win.

As for the air remaining hot after she runs out of aura...well, that depends. A slight breeze would disperse the hot air, so while the average temperature around her would be warmer than before it wouldn't be scalding enough to give her first degree burns all over her body in the time it took for her aura to break. Semblances stop, the aura does it's ripple effect, and then you start being affected by things, giving the air around her time to disperse and cool enough for it to be considered a very hot summer's day and maybe a tiny bit of sunburn. Heated objects would retain their heat, but that's more because an object is not constantly being replaced by new object particles like air is.