Akuma has fled the leaf, after shikisha tried to murder him.
As he sprints down the hall to mizukis office, attempting to gain citizenship, The former anbu crashes into two leaf anbu operatives. He attempts to negotiate with them, but when that fails, he realizes he must kill them to pass.
Akuma struck a vital pressure point on one anbu, and the anbus face turns gray, and he falls down, dead. As the other anbu turns to run, akuma tackles him and stabs his artery with a kunai, the last thing the man did was cry for backup.
"Dammit!" akuma thought, I should have finished him quickly.
As akuma is surrounded by ninja of all ranks he feels his chakra start to grow, then... he realizes its not his, The spirits Kidate, Ho, and Aqua Were breaking lose!
Since Their previous rampage had gotten him thrown from the cloud, akuma strained to contain them, but they could not be stopped.
The demons exploded from him and started massacring the assembled ninja, anbu and student alike, Akumas last thought before he slipped into the non controling trance brought by the demons was: "I am a monster"