For a moment, I thought this was going to turn into a crossover with the Iron of Ying and Yang...but it just looks to me like Satori's inner "Angel" and "Demon" are going to duke it out.
This is the classic Good and Bad conscious; Satori is trying to decide whether to go all the way or not. Imuzu is not satisfy with the simple little angel and demon that floats arounf your head, no. Were going to have an epic fight.