[@Kafka Komedy], it's more like Rin from [i]Aoi no Exorcist[/i] when he goes into devil mode and from what you asked. Those flames come directly from hell, so they don't need to be sustained by emotions. However, in the concept I planned for Agni, he uses his own hatred and despair to manipulate it. And no, it doesn't need real air and I don't plan to use others' negativities or else it would be OP.