Yokoi-san gets closer to Seki-kun as he's trying out glasses in class. She starts to think that the glasses are so he can see during class... but that leads to a huge misunderstanding!
"Vertebrate" refers to the backbone,
"Wirbel" ist in dem Fall das Rückgrat.
"Vertebrati" significa 
che sono dotati di spina dorsale,
Os vertebrados são os que têm ossos,