3 — Spy Kyoushitsu

: While on vacation, the four girls encounter a woman named Matilda who claims to be the mother of Annette, the team's eccentric amnesiac inventor.

: The central figure of Volume 3. She is the team's genius inventor who suffers from amnesia. Spy Kyoushitsu 3

: The reunion is short-lived; shortly after meeting Matilda, the four girls go missing, prompting Klaus and Lily to track them down. : While on vacation, the four girls encounter

: Available at Walmart - Alibris Books for $9.46 . : While on vacation

: The youngest member of the team, known for her ability to sense and manifest misfortune. Availability

Spy Classroom Short Story Collection, Vol. 3 (light Novel): Honeymoon Raker