On her way to school one morning, a boy from another school gives Himeno a love letter. The sudden turn of events has Himeno bewildered, and behind her bewilderment likes a traumatic memory from her childhood. What happened in Himeno's past? Himeno and Nozomi have come to Kyoko's house for a study meeting. As they're working, something strange happens...
Oh! Didn't the Aztecs have 
some kind of snake deity?
آه! ألا يعتبر الأزتيكيين
الثعابين كنوع من الآلهة؟
Ah!
Ah, pero ¿los Aztecas
no tenían un dios serpiente?
Ah, pero ¿los Aztecas
no tenían un dios serpiente?
Oh! Non c'era una specie di dio serpente
nella mitologia azteca?
Ah! Os astecas não tinham
uma espécie de deidade-cobra?
А! У ацтеков же вроде было 
какое-то змееподобное божество?