Toaru Majutsu no Index Episode 21

Title: Kauntāsutoppu (正体不明(カウンターストップ)) - Unknown Entity (Counter Stop)

Date Aired: 26 February 2009

Previous Episode → 20

Next Episode → 22

Synopsis
Summary of entire episode.....

Full summary of segments...

Adapted From
Adapted from? which chapter of manga and/or novel

Referbacks
references to previous episodes

New Characters
Hyouka Kazakiri

Sherry Cromwell

Aiho Yomikawa

New Abilities
Counter Stop

Cultural References
"easter eggs"