all in all the best animated series i have see . it be hardcore . i watch the series in japanese with english subtitle . the series give you a feel of the horror and suffer people can endure under the will of a tyrant . most people will give in to the tyrant and become like the tyrant in their compromise to survive . a few will express good and hope despite the great evil be inflict upon them and those around them . i be sure this story derive it material from the ongoing horror story throughout the world represent child soldier kidnap in africa and young recruit to the taliban and radical islamic terrorist and rebel who join the farc in colombia and gang recruit in major inner city throughout the world and etc .