Rrrrrowr! The warning for UST was accurately given, that was intense! As for IC-ness, I thought you built it up and drew it out more than well enough to convince of your characterisations; basically, as IC as a yaoi fanfic can get. I like it when the characters sound like themselves, and so I like this.(Hakkai-erotic asphyxiation? There are weirder kinks...
Gojyo's 'convenient distraction' made me smirk.
All in all, good stuff. Whew, think I need a cigarette...!