Years ago, mysterious beings only known as kihei appeared without warningandoverran the world.To confront this strange menace, the Twilight Academywasestablished to train students in black magic and how to battle theotherworldlyinvaders.Graduates of this school are no strangers to death andmany meet theirdoom while fulfilling their duty to protect humanity.Kou isjust one more casualty inthis war for survival...or so he thinks.Before hecan even appreciate the fact that he’sstill alive, a kihei pledges herloyalty to him and vows to stay by his side until the endof days, settingoff a chain of events that can only lead down the road of madness andchaos.