Raizel, protector of the nobles, along with his loyal butler Frankenstein and former Union experiment M-21, continue to spend their days at Ye Ran High School while keeping their true identities secret. They were living their lives as normal until one day, when a violent gang barges onto the school grounds. M-21 is forced to make a choice in order to protect the students. Meanwhile, DA-5, a mysterious special forces team, is dispatched to Japan on an investigative mission. What will become of the trio's peaceful new life?
So our mission this time 
isn't a war, but terrorism?
إذًا فمهمّتنا الآن ليست حربًا، بل إرهابًا؟
Diesmal geht es bei unserer Mission
nicht um Krieg, sondern um Terrorismus?
¿Esta vez olvidamos la guerra
y nos dedicamos al terrorismo?
¿Esta vez olvidamos la guerra
y nos dedicamos al terrorismo?
Cette fois, notre mission
relève plutôt du terrorisme ?
La prossima è una missione
di terrorismo anziché di guerra?
Значит, теперь нам поручили
не войну, а терроризм?