Yamagou Ayumi is the poster girl of Omitama yogurt in real life. Example: post #5980169

yogearth - portmanteau of yogurt + dearth.

Ooarai Girls Academy is based out of the Ibaraki Prefecture, which is where the commander's meeting took place in the OVA "Commander War".

Omitama is a brand of yogurt in Japan. omitamayogurt.jp