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?
Wh-What the heck? All the girls' 
eyes turned into hearts?!
!مـ-ما هذا؟ تحوّلت عيون جميع الفتيات إلى قلوب
W-Was geht denn da? Die Mädels
haben ja nur noch Herzchen in den Augen!
¿Qué rayos? ¡Pusieron ojos de corazón!
Pero ¿qué…?
¡Ponen ojitos de corazón!
Pourquoi leurs yeux
brillent comme ça ?
M-Ma cosa?
Como é? Os olhos das
garotas viraram corações!
Что такое?!