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?
I thought this would be my first 
big job in ages. That was it?
خلتُني حصلتُ على مهمّة كبيرة 
بعد وقتٍ طويل. أهذا كلّ شيء؟
Da freut man sich auf einen schönen Auftrag –
und dann war’s das schon?
Creí que por fin sería un trabajo
de los grandes. ¿Eso fue todo?
Pensaba que por fin sería un trabajo
de los gordos. ¿Eso es todo?
Ça faisait longtemps
qu’on s’était pas autant défoulés.
Ci danno un lavoro importante
dopo tanto tempo ed è già finito?