Libra Festival

The Libra Festival (called the Scale Festival in the Crunchyroll subs) was an event that took place in Akihabara during the first October after the Apocalypse.

Overview
The Round Table Alliance held a festival for the autumn season that was organized by the Production Guild Liaison Committee ; in the anime, Maryelle whines, wanting it to happen, until it was approved.

Trivia

 * Crunchyroll translates the name as Scale Festival, which loses the original name's reference to the astrological sign.