A special forces team known as the DA-5 kill off military combat units in an unknown location and get ready to set out to Japan for their next mission, an investigation into the disappearance of two Union members. Meanwhile, Raizel, the protector of the nobles, along with his loyal servant Frankenstein and former Union experiment M-21, continue to spend their days at Ye Ran High School, all while keeping their true identities a secret. M-21 has been assigned to be a security guard for the school in order to pay off his debts of living in Frankenstine's house. During the morning, Frankenstine affirms to Raizel that he had erased the memories of his friends who were involved in their recent incident against members of the Union...