- Yuka Iguchi (Main (voice))
- Show Hayami (Ferdinand (voice))
- Mutsumi Tamura (Lutz (voice))
- Takehito Koyasu (Benno (voice))
- Megumi Nakajima (Tuuli (voice))
- Tsuyoshi Koyama (Gunther (voice))
- Fumiko Orikasa (Effa (voice))
- Tomoaki Maeno (Mark (voice))
- Kazuhiko Inoue (Sylvester (voice))
- Toshiyuki Morikawa (Karstedt (voice))
- Yuuichirou Umehara (Damuel (voice))
- Yuko Sanpei (Gil (voice))
- Sho Karino (Fran (voice))
- Kiyono Yasuno (Wilma (voice))
- Minami Takayama (Florencia (voice))
- Yuka Terasaki (Wilfried (voice))
- Kikuko Inoue (Elvira (voice))
- Asami Seto (Brigitte (voice))
- Nao Toyama (Angelica (voice))
Ascendance of a Bookworm — S0E1
Episode: Side Story One: Eustachius's Incognito Operation Downtown
Air Date: 2020-03-10
Runtime: 12 min
Overview
The head priest wants more information on Main, so he sends two of his aides, Eckhard and Eustachius, to investigate her.