The Gessen girls infiltrate their middle school to get more info on Gekkou and Senkou.  This means cosplay, and outfits that are way too small.
This training that
Shiki-san came up with...
El entrenamiento
en el que pensó Shiki-san
El entrenamiento
en el que pensó Shiki-san
Questo allenamento messo insieme da Shiki-san...
Este treinamento que
a Shiki-san inventou...
Сики предложила нам эту тренировку…