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...
And our lack of knowledge about ourselves
وقلة معرفتنا عن أنفسنا
Dass wir so wenig über
uns selbst wissen,
Y nuestra falta de conocimiento
Y nuestra falta de conocimiento
Et encore, c’est grâce aux humains
Sono stati proprio loro a farci rendere conto
E nossa falta de conhecimento 
sobre nós mesmos
И науке понимания самих себя