“End of Summer — Rain — Loss”
“Natsu no owari — Ame — Sōshitsu” (夏の終わり — 雨 — 喪失)

Rakka searches for a room of her own to move into, but most of Old Home is in disrepair. Kuu gives her a warm coat to prepare for winter, but as she leaves, Rakka is disturbed to see the halo over Kuu’s head flickering. Seeing Rakka in her new coat, Kana tells her it was the first item of clothing Kuu bought for herself, despite being too large, and that Kuu has always had a habit of trying to imitate her older companions, often with disastrous results. Returning to her search, Rakka discovers that Kuu has circled a specific room on her map. She goes there and is delighted to feel a sense of familiarity. Kuu, who has been waiting for her, explains that this is the room where Rakka was born. She then thanks Rakka for the influence she has been, and leaves. That night, a rainstorm hits, and Kuu is nowhere to be found. After Rakka sees a light in the Western Woods, Reki says that Kuu may have taken her Day of Flight and passed outside the walls. The Haibane all don raincoats and go to the woods, where they find Kuu’s halo, now cold and dim.