A new student, the Antarctican Quetzalcoatl Sassassul, suddenly transfers into the girls' school one day, much to the intrigue of everyone in the class. But for some reason, Himeno seems to have experienced some sort of childhood trauma involving Antarcticans. The new student is as kind and friendly as can be, but Himeno just can't shake her fear...

Meanwhile, everyone in the class has lots of questions for Sassassul...
our ancestors, 
who still crawled on the ground,
فإنّ أجدادنا، الذين كانوا
،ما يزالون يزحفون على الأرض
Man erzählt sich noch
von Ruinen aus der Zeit,
nuestros ancestros, que se arrastraban,
tenían ciudades subterráneas.
nuestros ancestros, que se arrastraban,
tenían ciudades subterráneas.
Des légendes obscures racontent
quando ancora strisciavamo sul terreno,
nossos ancestrais, que ainda rastejavam,
наши предки, ещё ползавшие по земле,