|Японское имя:||糸島 軍規|
Blood Type: AB
Gunki Itoshima is a senior of Class 13 and a former member of the Flask Plan's Plus Six. His project name is Death Watch.
Itoshima is a seemingly hotheaded boy who declares that he is not so cowardly to leave a friend in need. Like the rest of the Plus Six, he adds "Let's try and get along." after his introduction. Like the other members of the Plus Six, he is considered a basis for Class -13, having a personality that separated him even from other Abnormals.
Voiced by: Takuya Satō