the United States , Nevada , ruled by the Death of Death City . Death the City has a special school operated by the death of the death weapon . Referred to as the death of weapons specifically . The students are divided into the staff person with weapons, according to the instructions of death to kill the soul of the sinner , the ultimate goal is to collect 99 individuals with a witch 's soul to purchase weapons as weapons of death Death the Scythe . In order not to become ghosts with practice ...