Kiyotaka Ayanokouji has finally graduated from ANHS... yet he didn't achieve his true freedom. He has now gone into hiding as someone from his dreadful past has returned with a single objective: Find and Kill Kiyotaka Ayanokouji and his subordinates. Before he could become MIA however, he has given one of his subordinates who still remains at the school, Tsubasa Nanase a number of tasks in order to defeat his hidden enemy. How she would comply on the tasks depends on her actions as every move she does will have a permanent effect to her whole future. Will she act alone or make some "friends" along the way?