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 jaws aren't strong at all.
.فإنّ أفكاكنا ليست قويّة إطلاقًا
haben wir keine starken Kiefer.
nous n’avons aucune force
dans la mâchoire.
le nostre mandibole sono davvero deboli.
nossas mandíbulas não são 
nem um pouco fortes.
у нас очень слабые челюсти.