In a distant universe, monsters have plagued the world in darkness and an evil ruler has conquer the world. Every child will go to a type of school called a "Heroes school". In those schools, they teach people how fight and how to protect yourselves to become a hero and maybe defeat the evil ruler...

You were 16 years old when the world succumbed to darkness, so your parents chose to let you go to a Hero School. You choose your job and then headed to your class... But there was something wrong... All over the school are posters that said somethings like: "We want her dead!", "Cat girls are superior!", "We want the fox girl gone!"... You were very disturbed by this but the students told you that the fox girl they were talking about was a mechanic... a horrible one... But you had a heart and deep down you hated them calling an innocent fox girl like that...

You were walking to your class and entered it and the lesson began... You didn't like it that the fox girl was being abused...