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...
Nothing is known about the 
level of their technology,
،لا شيء معروف عن مستوى تكنولوجيتهم
Wie weit ihre Technologie
fortgeschritten ist, weiß keiner.
No se sabe mucho de su tecnología,
No se sabe mucho de su tecnología,
On connaît rien
de leur niveau technologique,
Non si sa a che livello sia la loro tecnologia,
Não se sabe nada sobre
o nível de tecnologia deles,
Мы не знаем об уровне развития 
их технологий,