* The first volume/episode, and ''how''. [[spoiler: Kō's final line (''It's so simple... I just need to cry'') is just crushing. The ending song is extremely sad, too, since it's essentially all about Kō and Wakaba's relationship, and, well, yeah]].
* And all reminisces by Ko, Aoba, and Akaishi back to "that day/summer," Wakaba, and her last dream.
* Akaishi's 'treasure.'