Japanese: ƒWƒ…ƒjƒA
Seiyuu: Saiga Mitsuki

Junior is a mysterious boy who Anita keeps running into. She is friendly towards him and invites him to come to the class midnight meeting at their school. He comes but he doesn't join with all the people because he is shy and thus joins Anita later on. Junior is also associated with Joker (Joe Carpenter) and Wendy and has missions to collect the Gentleman books. Junior has the power to phase through things. His code name is "Staff J".

"Junior" means a low-level position. It is an informal term used to contrast the inexperience of an individual compared to an experienced one.