|Episode 8 «|| 井戸 / 再生 / 謎掛け
Well / Rebirth / Riddle
|» Episode 10|
The haibane of Old Home still search for Rakka, who is meanwhile rescued by the Toga from the well she fell in. While trying to find her way home she gets lost in the Western Woods and ends up at the wall, which she touches. Washi finds her there and escorts her out of the woods, talking with her along the way. He gives her a riddle to think about, and leaves her at the ends of the woods, where the other haibane find her. Reki is very upset when Rakka tells her that she touched the wall, and they rush her back to Old Home, where she falls ill.
For a more detailed summary, read about episode 9 on Sekai no Hajimari.