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'm only working to make up 
for being allowed to stay here.
.أعمل فقط لكي أعوّض على إقامتي هنا
Ich verrichte nur meine Arbeit im
Gegenzug dafür, dass ich hier bleiben darf.
Solo hago lo que debo
para tener un techo sobre mi cabeza.
Solo hago lo que debo
para tener un techo sobre mi cabeza.
Je travaille uniquement
pour compenser ton hospitalité.
Sono solo forza lavoro da dedicare
ai compiti più seccanti.
Só estou fornecendo meu trabalho
para compensar minha estadia.
Просто отрабатываю то,
что должен за проживание. Вот и всё.