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...
We had a lesson about that once...
...درسنا عن ذلك مرّة
Das kam mal im Unterricht vor.
Tuvimos una clase de eso…
Tuvimos una clase de eso…
On a vu ça en cours.
Una volta ce ne hanno parlato a scuola...
Tivemos aula sobre isso uma vez...
Нам как-то рассказывали...