1 The abandoned akuma

A man youko being in a unknown organisation named (black swan) which intends to kill people with a hidden motive .soon as youko recieved a mission `named zero" to kill a girl named ayasaki yoru .unfortunately she is youko's little sister and soon as he find her.

Yoru asked youko with a low sad voice `brother... Said yoru .yoru my sister are you still alive? Why dont you meet me in midth .i got adapted by a old man. `yoru" i got mission to kill you said youko.brother are you going to kill me asked youko.no my lil sister i wont kill you as replied youko.brother that damn black swan killed our family by getting them caught on a multiverse and they have the whole world in their hands said yoru.youko got a call all of sudden in an unknown number. Youko attends the call . you betrayed us *akuma" and you will be punished the mission zero will be finished.call ends....