第 5 集: 克察爾科亞特爾·薩薩蘇爾轉學至學校，揭開神秘南極人與姬野的過去創傷。
2017年8月6日 播出
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... (Source: Crunchyroll)