Youji is nervous because he is returning to school after being absent for several months due to illness. From that day, his surroundings have started to change. Tetsuo finds ways of approaching Youji and when asked why, never gave an answer. To this, Youji begins to fear him. Zenya also appears at the same time, one day suddenly whispering to Youji, "It's all your fault."
Strange pains...vivid nightmares...Are these just illusions? What are Tetsuo and Zenya's purpose?
What are these feelings? Reason...or instinct?